Assembly Procedure for the Mine Specific Design (MSD II) Truck Body {7258, 7960} Caterpillar

Off-Highway Truck/Tractor

795F AC (S/N: ERM1-UP)

Introduction

This Special Instruction contains the necessary procedures and information for assembling and welding a Mine Specific Design truck body.

The Mine Specific Design truck body is also referred to as the MSD II truck body.

The shipping configuration of the MSD II truck body depends on the destination and the type of transportation that is available. In some cases, the MSD II truck body may be assembled differently from the factory. The following special instruction covers assembling the MSD II truck body.

Do not perform any procedures or order any parts until this publication is read thoroughly.

The recommended tools and equipment should be present during assembly. If the recommended tools or equipment are not present, assembly will be more difficult and more time will be necessary to complete the assembly.

A flat, smooth, drained area 25 m (80 ft) by 30 m (100 ft) is needed for the assembly.

Note: An enclosed structure is recommended for the assembly of the MSD II truck body. The dispersing of the shielding gases away from the welding area must be kept to a minimum.

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Do not attempt to assemble this machine until you read and you understand the assembly instructions. Improper assembly procedures could result in injury or death.

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Make sure the lifting cables and other lifting devices are strong enough to support the machine.

The assembly begins with the Center Body Assembly. The Left Hand Body Assembly and the Right Hand Body Assembly are welded to the Center Body Assembly. The Front Wall Assembly is welded to the Center Body Assembly. The Canopy Assembly is installed.

Note: The serial number of the truck body is stamped on the edge of each section.

Parts List

Weights and Required Tools

The approximate weight of the truck body depends on the configuration of the truck body. Use one or two mobile cranes to lift the truck body properly.

Note: The weights that are listed in this document are only approximate weights. The weights represent only one size of MSD II truck body. MSD II truck bodies can vary in size and weight. Refer to the machine shipping order (MSO) that was shipped with the truck body for specific weights. Use the MSO to determine lifting requirements.

Weld Specifications and Parameters

Note: Personal breathing protection should be worn by the welders. Personal breathing protection will prevent fumes from entering the lungs of the person that is welding. Use a 1U-8088 Type H Respirator for respiratory protection.

All of the welders must be qualified in Shielded Metal Arc Welding (SMAW) and Flux Cored Arc Welding (FCAW). All of the welders must be qualified in groove welding and fillet welding in the vertical position. Refer to the American National Standards Institute (ANSI)/American Welding Society (AWS) D1.1. Prior to welding, the process must have been used by the welders during the last 6 months. Welding qualifications must be documented and welding qualifications must be current.

The surrounding area must be a minimum temperature of 16 °C (60 °F) before welding and during welding.

The proper stick welding electrode for Shielded Metal Arc Welding (SMAW) is E7018 American National Standards Institute (ANSI)/American Welding Society (AWS) A5.1. The finished weld will have the following minimum mechanical properties:

• 480 MPa (69600 psi) Tensile Strength

• 400 MPa (58000 psi) Yield Strength

• 22 percent elongation in 50 mm (2 inch)

• 27 N·m (20 lb ft) at −29 °C (−20 °F) Impact Toughness

The "E7018" electrodes must be stored in an electrode oven at 121 °C (250 °F). Scrap the "E7018" electrodes or recondition the "E7018" electrodes if the "E7018" electrodes get damp. Recondition the "E7018" electrodes to the manufacturer's specifications. The following table is the electrode current setting in relation to the electrode diameter:

Set the polarity to direct electrode positive (reverse polarity). Use the direct current. Remove the slag after every weld pass. The width of the weld should not exceed two times the electrode diameter.

As an alternative process, use the Flux Cored Arc Welding (FCAW) with E71T-1 H4 (ANSI/A5.20) welding electrode and the manufacturer's shielding gases that are specified for inside welding. The H4 implies that the electrode is designed to provide less than 4 ml/100 g of diffusible hydrogen in the weld deposit. The weld that is deposited by the flux cored welding electrode will have the following minimum mechanical properties:

• 480 MPa (69600 psi) Tensile Strength

• 400 MPa (58000 psi) Yield Strength

• 22 percent elongation in 50 mm (2 inch)

• 27 N·m (20 lb ft) at −29 °C (−20 °F) Impact Toughness

Use only flux cored welding electrodes that have been stored in undamaged packages that resist moisture or use only flux cored welding electrodes that have been stored in an oven at 120 °C (250 °F).

Welding parameters will vary due to the welding position and due to the manufacturer of the welding electrode. A 1.3 mm (0.051 inch) electrode diameter will typically have the following welding parameters:

Note: Use the manufacturer's recommended welding electrode parameter.

Set the polarity to direct electrode positive (reverse polarity). Use the direct current. Remove the slag after every weld pass. The width of the weld should not exceed two times the electrode diameter.

Refer to "Welding Instructions" for more welding guidelines.

Welding Instructions

The following materials are used to fabricate the MSD II Truck Body:

• 400 Brinell hardness number

• 450 Brinell hardness number

Before welding on the MSD II truck body, verify the materials that are used to fabricate your particular MSD II truck body. There are specific welding procedures for each material. Refer to the following procedures to weld the materials successfully during the assembly of the truck body.

Note: When two or more different materials need to be welded together, use the procedure for the material that has the more stringent requirements.

400 Brinell Hardness Number or 450 Brinell Hardness Number Material

The following procedure covers the requirements for welding the assembly of the MSD II truck bodies that are fabricated with 400 Brinell hardness number material or 450 Brinell hardness number material. Refer to "Weld Specifications and Parameters" for qualifications, safety, and welding electrode parameters. Attach the welding ground cable directly to the body assembly. Protect all of the machined areas from sparks and spatter that are produced by welding, chipping, and grinding operations.

Proper preparation of the welding area must be conducted prior to welding. All weld joints and welding areas must be exceptionally clean. Clean the welding area with a grinder. Completely remove all paint, rust, scale, slag, dirt, moisture, grease, and so on, before welding.

Tight fitup of the body assemblies is important. Ensure that every effort is made to minimize the gap spacing. Minimizing the gap spacing reduces the residual stresses.

to minimize the possibility of cracking, use large tack welds. The tack welds should have a maximum width of 8 mm (0.32 inch) and a length of 75 mm (3 inch).

A Tiger Torch can be used to preheat the material that is welded. Preheating is most critical during the tack welding procedure and during the welding of the root pass. Refer to Table 6 for the required preheat temperature of the weld area.

Ensure that the weld groove and 76 mm (3 inch) in each direction from the weld groove is preheated to the specified temperature. Verify the preheat temperature with a 164-3310 Infrared Thermometer or with a temperature stick.

The minimum interpass temperature should equal the preheat temperature. The maximum interpass temperature should not exceed 250 °C (480 °F).

Note: The above preheat and interpass temperatures are for mild restraint to moderate restraint. If clamping devices are utilized to reduce the gap spacing to less than 3 mm (0.12 inch), use the next higher preheat temperature, when possible. Additional stresses are offset by using the next higher preheat temperature.

Note: When the ambient temperature is below 0 °C (32 °F), the initial preheat temperature should be raised to 121 °C (250 °F). Preheat 76.0 mm (3.0 inch) inches in each direction from the weld joint. The added preheating will help avoid possible heat sink of the floorplates.

All welded areas must be inspected. Hydrogen induced cracking normally occurs within 72 hours of welding. Allow the welded areas to cool for 48 hours to 72 hours prior to performing a visual inspection. If any welding areas are suspected of being cracked during the visual inspection, then use the dye penetrant process or the magnetic particle inspection process to inspect the welding areas. The welds shall be free from the following defects: cracks, porosity, undercut and incomplete fusion. All weld quality shall conform to American National Standards Institute (ANSI)/American Welding Society (AWS) D14.3.

Specifications for Cables, Chains, and Lifting Devices

Use approved cables, chains, and lifting devices to lift components. Refer to the manufacturer's weight's to determine the application when you select the following items: cable, chain and lifting devices. When you lift a component, the lift angle is critical. Refer to the Illustration that follows to see the effect of the lift angle on the working load limit.

Note: The lifting devices that are shown in this publication are not Caterpillar parts.

Illustration 1	g00629745
Lift angles for lifting slings. (A) The load capacity is 100% of the working load limit for the sling. (B) The load capacity is 86% of the working load limit for the sling. (C) The load capacity is 70% of the working load limit for the sling. (D) The load capacity is 50% of the working load limit for the sling.

The Site for Assembly

The following photographs are of the shipping configuration.

The MSD II truck body will be delivered in six assemblies.

• Center body assembly

• Front wall assembly

• Left-hand body assembly

• Right-hand body assembly

• Rear canopy assembly

• Front canopy assembly

Illustration 2	g01513438
View of the center body assembly. (1) Center body assembly

Illustration 3	g01513819
View of the front wall assembly. (2) Front wall assembly

Illustration 4	g01513440
View of the left and right-hand body assemblies. (3) Left-hand body assembly (4) Right-hand body assembly

Illustration 5	g01513494
View of the front and rear canopy assemblies. (5) Rear canopy assembly (6) Front canopy assembly

Note: When the body is fully assembled, all lifting eyes must be removed from the bottom of the body, floor, front wall, canopy, and side walls. If the eyes on the bottom of the body are needed for transportation, then the lifting eyes must be removed before installing the body to the chassis.

Assembly Procedure

Illustration 6	g01513834

1. Use a suitable lifting device to position center body assembly (1) onto wood blocks inside the work area. Center body assembly (1) weighs approximately 11771 kg (25950 lb).
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   Illustration 7	g01513835
   View of the edges that need to be cleaned prior to assembly.

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   Illustration 8	g01513877
   Prepare the rib joints for welding.

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   Illustration 9	g01513885
   Prepare the front transition plate and the front wall for welding.

2. Use a grinder to clean the welding areas of center body assembly (1). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding. Refer to Illustration 7 through Illustration 9.

   Note: All of the welding areas on center body assembly (1) should now be cleaned.

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   Illustration 10	g01518550
   Top view of spacer (7).

3. Fabricate four spacers (7) with the following dimensions:

   (AA) Length ... 50.8 mm (2 inch)

   (BB) Width ... 25.4 mm (1 inch)

   (CC) Thickness ... 6.0 mm (0.25 inch)

   Note: The spacers will be used to obtain the correct root opening of 6.0 mm (0.24 inch) between the center body assembly and the two other body assemblies.

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   Illustration 11	g01513919
   View of spacer (7) that is tack welded to center body assembly (1).

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   Illustration 12	g01513921
   View of the spacers that are tack welded along the right side of the center body assembly.

4. Tack weld two spacers (7) to the right side of center body assembly (1). Repeat for the left side of center body assembly (1). Refer to Illustration 11 through Illustration 12.

   Note: Before tack welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

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   Illustration 13	g01514483

5. Locate left-hand body assembly (3) and right-hand body assembly (4) in the work area.
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   Illustration 14	g01514491

6. Use a grinder to clean the welding areas of the left-hand body assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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   Illustration 15	g01514576

7. Attach suitable lifting device (A) and suitable lifting device (B) to the two lifting eyelets that are located at the top of the side wall of left-hand body assembly (3). The left-hand body assembly weighs approximately 7439 kg (16400 lb).

8. Attach lifting device (A) and lifting device (B) to crane (C).
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   Illustration 16	g01514653

9. Slowly move crane (C) in the direction of the arrow in Illustration 16.
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   Illustration 17	g01515539

10. Use crane (C) to lay left-hand body assembly (3) on the ground.
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    Illustration 18	g01515547

11. Use a grinder to clean the welding areas of the left-hand body assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding. Refer to Illustration 14 through Illustration 18.

    Note: All welding areas on the left body assembly should now be cleaned.

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    Illustration 19	g01515551

12. Use crane (C) to position left-hand body assembly (3) upright.
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    Illustration 20	g01515549
    Front view of left-hand body assembly (3) that is aligned with center body assembly (1).

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    Illustration 21	g01516020
    View of the alignment plates that are located along the floor seam of the center body assembly.

13. Position the left-hand body assembly (3) against center body assembly (1). Refer to Illustration 20 through Illustration 21.

    Note: The alignment plates ease the alignment of left-hand body assembly (3) to center body assembly (1).

    Note: 1U-9204 Lever Puller Hoist can be used to align left-hand body assembly (3) against center body assembly (1).

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    Illustration 22	g01516077
    View of five bolts (9) and five nuts (8) that are located on the top of center body assembly (1) and left-hand body assembly (3).

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    Illustration 23	g01516107

14. Install five bolts (9) and five nuts (8). Do not tighten the bolts and nuts.
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    Illustration 24	g01516145
    View of center body assembly (1), left-hand body assembly (3), and spacer (7).

15. Tighten seven bolts (9) and seven nuts (8) until center body assembly (1) and left-hand body assembly (3) are tight against two spacers (7).

    Note: Spacers (7) are used to obtain the correct root opening of 6.0 mm (0.24 inch) between center body assembly (1) and left-hand body assembly (3).

16. Position two suitable blocks under the front and the rear of left-hand body assembly (3).

17. Remove the lifting devices from left-hand body assembly (3).
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    Illustration 25	g01516152
    View of an angle and wedge that can be used along the inside of the floor for alignment of the body assemblies.

18. Use angles and wedges to help align the left-hand body assembly (3) to the center body assembly (1). Refer to Illustration 25.

19. Also, the body assembly can be aligned by the use of bolts, nuts, and lugs.

    Note: Before tack welding any lugs or bolts to the body assembly, use a grinder to clean the welding areas. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.

    Note: Refer to "Welding Instructions" before tack welding. Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

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    Illustration 26	g01516176
    View of gap spacing (D) that is necessary along the seam between the center body assembly and the left-hand body assembly. (D) 6.0 mm (0.24 inch)

20. Ensure that there is a 6.0 mm (0.24 inch) gap spacing (D) that separates the center body assembly from the left-hand body assembly.

    Note: If necessary, use air arc gouging to enlarge gap spacing (D) to 6.0 mm (0.24 inch). Use a grinder to clean the slag from gap (D).

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    Illustration 27	g01516597
    View of right body assembly (4) that is aligned with center body assembly (1).

21. Repeat Step 5 through Step 20 to position the right-hand body assembly (4). The right-hand body assembly weighs approximately 7439 kg (16400 lb).
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    Illustration 28	g01516598
    (E) 7956 mm (313 inch)

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    Illustration 29	g01516618
    This view shows the front wall assembly that is being measured to obtain dimension (F).

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    Illustration 30	g01516634
    View of the rear canopy assembly that is being measured to obtain dimensions (G).

    Note: Dimension (E) is measured at the highest point and the outermost point forward.

22. Before tack welding right-hand body assembly (4) to center body assembly (1), ensure that the outside width of front wall assembly (2) and the outside width of rear canopy assembly (5) equal dimension (E). If necessary, maneuver right-hand body assembly (4) until the inside width does equal dimension (E). Dimension (E) must be equal to dimension (F) and dimension (G) in order for front wall assembly (2) and rear canopy assembly (5) to fit correctly with the assembled body.
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    Illustration 31	g01516934
    View of the areas that are tack welded along the floor seam.

    Note: As required, trim the ends of the floor seam to achieve 100% penetration of the weld.

23. Tack weld the left-hand body assembly to the center body assembly.

    Note: Refer to "Welding Instructions" before tack welding. Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

24. Repeat Step 23 for right-hand body assembly (4).

    Note: The right-hand body assembly weighs approximately 7439 kg (16400 lb).

25. Remove all nuts, bolts, lugs, wedges, and angles. Grind the welds smooth.
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    Illustration 32	g01516950
    View of the lifting points that are located at the top of front wall assembly (2)

26. Use two lifting eyes to locate front wall assembly (2) in the work area. The approximate weight of front wall assembly is 6027 kg (13287 lb).
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    Illustration 33	g01516945

27. Use a grinder to clean the welding areas of the front wall assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 34	g01594141

28. Use a grinder to clean the welding areas of the side wall and center body assemblies. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 35	g01594150

29. Position front wall assembly (2) to the truck body.

    Note: A fork lift can be used to position the lower portion of the front wall.

30. If necessary, attach two 1U-9204 Lever Puller Hoists to the bottom of the front wall assembly and the lifting eyes that are located on the floor of the left and right-hand body assemblies. Use the lever puller hoists to position the front wall assembly.
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    Illustration 36	g01594213

31. Tack weld the left-hand body assembly to the front wall assembly. Tack weld the length of the seam. Evenly space the tack welds at 610 mm (24 inch) intervals. Each tack weld should be 76 mm (3.0 inch) in length.

    Note: Before tack welding any components of the body, refer to the "Welding Instructions" section. Use a 164-3310 Infrared Thermometer to check for the proper preheat temperature.

32. Repeat Step31 totack weld the right-hand body assembly to the front wall assembly.
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    Illustration 37	g01594238

33. Tack weld the front wall assembly to the bottom of center body assembly (1), left-hand body assembly (3), and right-hand body assembly (4). Tack weld the length of the seam. Evenly space the tack welds at 610 mm (24 inch) intervals. Each tack weld should be 76 mm (3.0 inch) in length.

    Note: Before tack welding any components of the body, refer to the "Welding Instructions" section. Use a 164-3310 Infrared Thermometer to check for the proper preheat temperature.

34. Ensure that the front wall assembly has been completely tack welded. Remove the crane and lifting devices from the front wall assembly.

    Note: Do not remove the alignment blocks, wedges, bolts, nuts, lugs, or lever puller hoists.

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    Illustration 38	g01596353
    (W1) 20 mm (0.787 inch) V-groove weld

35. Preheat the floor seams.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

36. Weld the inside floor seam of the left-hand body assembly and right-hand body assembly to the center body assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 39	g01596974
    (W2) 12 mm (0.47 inch) V-groove weld (W3) 20 mm (0.787 inch) V-groove weld with 7 mm (0.28 inch) root penetration

37. Preheat the floor seams.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

38. Weld the bottom side floor seam of the left-hand body assembly and right-hand body assembly to the center body assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 40	g01597125
    Front view (W4) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W5) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

39. Preheat the outside seams between the front wall and the side body assemblies and the center body assembly.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

40. Weld the seam between the front wall and the side body assemblies and the center body assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 41	g01597129
    Rear View (W6) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W7) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

41. Preheat the outside seams between the front wall and the side body assemblies and the center body assembly.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

42. Weld the seam between the front wall and the side body assemblies and the center body assembly.

    Note: Remove the slag after every weld pass.

Installation of the Canopy Assembly and Guards

Note: The canopy assembly must first be assembled.

1. Place two suitable wood blocks on a level surface.
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   Illustration 42	g01594633
   View of the lifting points for rear canopy assembly (5)

2. Use a suitable lifting device to position rear canopy assembly (5) on the wood blocks. The approximate weight of the rear canopy assembly is 1971 kg (4345 lb).
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   Illustration 43	g01595273

3. Use a grinder to clean the welding areas of the rear canopy assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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   Illustration 44	g01595313
   Top view of the lifting points for the front canopy assembly (6)

4. Use a suitable lifting device to position front canopy assembly (6) on the wood blocks. The approximate weight of the front canopy assembly is 2022 kg (4457 lb).
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   Illustration 45	g01595775

5. Use a grinder to clean the welding areas of the front canopy assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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   Illustration 46	g01595777

6. Position front canopy assembly (6) next to rear canopy assembly (5) on the wood blocks.
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   Illustration 47	g01595793
   This is a view of four bolts (9) and of four nuts (8) that are located on the top of rear canopy assembly (5) and front canopy assembly (6).

7. Install four bolts (9) and four nuts (8) to secure rear canopy assembly (5) to front canopy assembly (6).

   Note: An angle and a wedge may be used to align the two assemblies.

8. If necessary, weld two lugs and use a 1U-9204 Lever Puller Hoist to align the two canopy assemblies.
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   Illustration 48	g01595876

9. If necessary, weld two lugs and use one bolt (9) and one nut (8) to hold the two canopy assemblies together for welding.

10. Tack weld both sides of rear canopy assembly (5) and front canopy assembly (6). Tack weld the length of the seam. Evenly space the tack welds at 610 mm (24 inch) intervals. Each tack weld should be 76 mm (3.0 inch) in length.

    Note: Before tack welding any components of the body , refer to the "Welding Instructions" section. Use a 164-3310 Infrared Thermometer to check for the proper preheat temperature.

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    Illustration 49	g01595905
    Bottom view of the canopy assembly (W8) 6 mm (0.24 inch) Bevel groove weld (W9) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W10) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

11. Preheat the bottom side of the canopy assembly.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

12. Weld the bottom side of the canopy assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 50	g01596094
    Side view of the canopy assembly (W11) 6 mm (0.24 inch) Bevel groove weld

13. Use a grinder to clean the welding area of the canopy assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.

14. Preheat the side seam of the canopy assembly.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

15. Weld both sides of the canopy assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 51	g01596155
    Top view of the canopy assembly (W12) 5 mm (0.20 inch) Square groove weld

16. Preheat the top side of the canopy assembly.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

17. Weld the top side of the canopy assembly.

    Note: Remove the slag after every weld pass.

18. Remove all nuts, bolts, lugs, wedges, and angles. Grind the welds smooth.
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    Illustration 52	g01597157

19. Attach a suitable lifting device to the canopy assembly. Use three cables in the configuration that is shown in Illustration 52. The canopy assembly weighs approximately 4000 kg (8820 lb).
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    Illustration 53	g01597494
    Typical view of the canopy that is being installed.

20. Raise the canopy assembly for installation.
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    Illustration 54	g01597473
    Typical view of the canopy that is being installed.

    Note: When you position the canopy, a guide line may be necessary.

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    Illustration 55	g01597474
    Typical view of the canopy that is being installed.

21. Position the canopy assembly to the body.
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    Illustration 56	g01600794

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    Illustration 57	g01600933
    (W13) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W14) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W15) 8 mm (0.32 inch) Double side fillet weld with 1.5 mm (0.06 inch) root penetration

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    Illustration 58	g01601115
    (W16) 6 mm (0.24 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

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    Illustration 59	g01622051
    (W17) 6 mm (0.24 inch) Double side fillet weld with 1.5 mm (0.06 inch) root penetration

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    Illustration 60	g01622088
    (W18) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

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    Illustration 61	g01622109
    (W19) 8 mm (0.32 inch) Double side fillet weld with 1.5 mm (0.06 inch) root penetration (W20) 6 mm (0.24 inch) Fillet weld

22. Preheat all of the weld seams.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

23. Weld the canopy assembly to the body assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 62	g01622137
    Rear view

24. Use a grinder to clean the welding areas for two plates (11) and plate (12). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 63	g01622197

25. Use a grinder to clean the welding areas of two plates (10) and plate (11). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.

26. Attach a suitable lifting device to position two plates (10) and plate (11) for installation. Plate (10) weighs approximately 76 kg (170 lb). Plate (11) weighs approximately 165 kg (365 lb).
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    Illustration 64	g01622146
    (W21) 12 mm (0.47 inch) Fillet weld (W22) 12 mm (0.47 inch) V-groove weld (W23) 14 mm (0.55 inch) Fillet weld with 2 mm (0.08 inch) root penetration

27. Preheat the seams between two plates (10) and plate (11) and the body.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

28. Weld two plates (10) and plate (11) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 65	g01622296

29. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 66	g01622297

30. Use a grinder to clean the welding areas of plate (12) and plate (13). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.

31. Attach a suitable lifting device to position plate (12) and plate (13) for installation. Plate (12) weighs approximately 218 kg (480 lb). Plate (13) weighs approximately 218 kg (480 lb).
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    Illustration 67	g01622310
    (W24) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration. Repeat weld (W27) for the 12 slots that are located in plate (13) and plate (14). (W25) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W26) 8 mm (0.32 inch) Bevel groove weld

32. Preheat the seams between plate (12) and plate (13) and the body.

33. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

34. Weld plates (12) and plate (13) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 68	g01622354

35. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 69	g01622368

36. Use a grinder to clean the welding areas of two plates (14). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 70	g01622427

37. Position two plates (14) to the body.
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    Illustration 71	g01622428
    (W27) 6 mm (0.24 inch) Bevel groove weld (W28) 6 mm (0.24 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

38. Preheat the seams between plate (12), plate (14), the left-hand body assembly, and the front wall assembly.

39. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

40. Weld plate (14) to the body.

    Note: Remove the slag after every weld pass.

41. Repeat Step 38 through Step 40 for plate (14) that is located on the right-hand side of the body.
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    Illustration 72	g01622435

42. Use a grinder to clean the welding areas of two plates (15) and plate (16). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 73	g01622436

43. Use a grinder to clean the welding areas of two plates (15) and plate (16). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 74	g01622470

44. Attach a suitable lifting device to position two plates (15) and plate (16) for installation. Plate (15) weighs approximately 90 kg (200 lb). Plate (16) weighs approximately 185 kg (410 lb).
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    Illustration 75	g01622471
    (W29) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W30) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W31) 5 mm (0.20 inch) Square groove weld

45. Preheat the seams between two plates (15), plate (16), and the body.

46. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

47. Weld two plates (15) and plate (16) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 76	g01622497
    Left side view

48. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 77	g01622506

49. Use a grinder to clean the welding areas of plate (17). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 78	g01622508

50. Attach a suitable lifting device to position plate (17) for installation. Plate (18) weighs approximately 55 kg (120 lb).
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    Illustration 79	g01622511
    (W32) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W33) 6 mm (0.24 inch) V-groove weld with 1.5 mm (0.06 inch) root penetration (W34) 6 mm (0.24 inch) Bevel groove weld with 1.5 mm (0.06 inch) root penetration (W35) 10 mm (0.40 inch) Bevel groove weld

51. Preheat the seams between plate (17) and the body.

52. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

53. Weld plate (17) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 80	g01622563
    Right side view

54. Repeat Step 48 through Step 53 to secure plate (18) to the body.

    Note: Plate (18) weighs approximately 55 kg (120 lb).

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    Illustration 81	g01596195
    Side view of the canopy assembly

55. Use a grinder to clean the welding areas of the rock guards on both sides of the canopy assembly. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 82	g01596213
    View of rock guard (19) that will be installed.

56. Use a grinder to clean the welding areas of rock guard (19). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.

57. Repeat Step 56 for the three remaining rock guards (19).

58. Attach a suitable lifting device to position rock guard (19) for installation. Rock guard (19) weighs approximately 56 kg (123 lb).
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    Illustration 83	g01596280

59. Hang the canopy rock guard with the attached clips.

60. Tack weld rock guard (19) to the canopy assembly. Tack weld the length of the seam. Evenly space the tack welds at 610 mm (24 inch) intervals. Each tack weld should be 76 mm (3.0 inch) in length.
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    Illustration 84	g01596293
    (L) 12 ± 2 mm (0.50 ± 0.08 inch)

61. Repeat Step 58 through Step 60 for the second rock guard (19).

    Note: Maintain gap (L) between the two rock guards (19).

62. Preheat the seam on the guard.

    Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

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    Illustration 85	g01596295
    (W36) 6 mm (0.24 inch) Bevel groove weld (W37) 6 mm (0.24 inch) Fillet weld (W38) 10 mm (0.40 inch) Square groove weld

63. Weld two rock guards (19) to the canopy assembly.

    Note: Remove the slag after every weld pass.

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    Illustration 86	g01596322

64. Repeat Step 58 through Step 63 for two rock guards (19) that are located on the other side of the canopy assembly.
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    Illustration 87	g01622569

65. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 88	g01622571

66. Use a grinder to clean the welding areas of plate (20). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 89	g01622573
    Front view

67. Attach a suitable lifting device to position plate (20) for installation. Plate (20) weighs approximately 55 kg (120 lb).
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    Illustration 90	g01622572
    (W39) 6 mm (0.24 inch) Fillet weld (W40) 6 mm (0.24 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

68. Preheat the seams between plate (20) and the body.

69. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

70. Weld plate (20) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 91	g01622574
    Front view

71. Repeat Step 65 through Step 70 to secure plate (21) to the body.

    Note: Plate (21) weighs approximately 55 kg (120 lb).

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    Illustration 92	g01622625

72. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 93	g01622627

73. Use a grinder to clean the welding areas of channel (22). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 94	g01622628
    (M) 3165 ± 3 mm (124.5 ± 0.12 inch)

74. Attach a suitable lifting device to position channel (22) for installation. Channel (22) weighs approximately 120 kg (265 lb).
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    Illustration 95	g01622629
    (W41) 8 mm (0.32 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W42) 6 mm (0.24 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

75. Preheat the seams between channel (22) and the body.

76. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

77. Weld channel (22) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 96	g01622636

78. Use a grinder to clean the welding areas of the body. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 97	g01622637

79. Use a grinder to clean the welding areas of plate (23). Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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    Illustration 98	g01622641

80. Position plate (23) for installation.
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    Illustration 99	g01622640
    (W43) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration (W44) 5 mm (0.20 inch) Fillet weld over a 2 mm (0.0787 inch) bevel groove weld

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    Illustration 100	g01622755
    (W45) 5 mm (0.20 inch) Fillet weld over a 2 mm (0.0787 inch) bevel groove weld (W46) 10 mm (0.40 inch) Fillet weld with 1.5 mm (0.06 inch) root penetration

81. Preheat the seams between plate (23) and the body.

82. Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

83. Weld plate (23) to the body.

    Note: Remove the slag after every weld pass.

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    Illustration 101	g01622639

84. Repeat Step 78 through Step 83 to secure plate (23) to the body.

Installation of the Bracket Assemblies for the Mud Guards

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Illustration 102	g03019817
Typical view of the bottom of the body (A) 318-2914 Plate As (B) 153-6275 Plate As or 312-5210 Plate As

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Illustration 103	g03019996
Typical view of the front wall assembly (A) 318-2914 Plate As (AA) 2940 ± 10 mm (115.7 ± 0.394 inch) (AB) 2980 ± 10 mm (117.3 ± 0.394 inch) (W1) 6 mm (0.236 inch) All around fillet weld with 1.5 mm (0.059 inch) penetration

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Illustration 104	g03019818
Typical view for Rock Bodies (B) 153-6275 Plate As (C) Plate (AC) 754 ± 10 mm (30 ± 0.394 inch) (W2) 6 mm (0.236 inch) All around fillet weld with 1.5 mm (0.059 inch) penetration

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Illustration 105	g03020177
Typical view for Coal Bodies (B) 312-5210 Plate As (C) Plate (AD) 240 ± 10 mm (9.45 ± 0.394 inch) (AE) 726.5 ± 10 mm (28.6 ± 0.394 inch) (W2) 6 mm (0.236 inch) All around fillet weld with 1.5 mm (0.059 inch) penetration

1. Weld two plate assemblies (A) and two plate assemblies (B) to the bottom of the body. Refer to Illustration 102 through Illustration 105 for additional information on locating the plate assemblies and the welds that are required.

   Note: The 153-6275 Plate As (B) is used on rock bodies, and the 312-5210 Plate As (B) is used on coal bodies.

   Note: Refer to Special Instruction, REHS1841, "General Welding Procedures" prior to performing any welding on the machine.

Installation of the Body Down Indicator

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Illustration 106	g01393033
Typical view of body down indicator

1. Use a grinder to clean the welding area of the indicator on the front of the canopy. Completely remove all paint, rust, scale, slag, dirt, moisture, and so on, before welding.
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   Illustration 107	g01622771

2. Use a grinder to clean indicator (24). Completely remove all paint, rust, slag, dirt, moisture, and so on, before welding.
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   Illustration 108	g01622778
   (A) 1782 ± 3 mm (70.16 ± 0.12 inch) (B) 60 ± 5 mm (2.4 ± 0.2 inch)

3. Position indicator (24) to the inside of the canopy assembly.

   Note: Measurement (A) is from the inside of the sidewall assembly.

4. Once indicator (24) is aligned correctly, tack weld indicator (24) to the inside of the canopy assembly.

   Note: Before tack welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

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   Illustration 109	g01622776
   (W47) 6 mm (0.24 inch) Bevel groove weld

5. Preheat indicator (24) and the inside of the canopy assembly.

   Note: Before welding, preheat the welding areas to the proper temperature. Refer to "Welding Instructions". Use 164-3310 Infrared Thermometer to check for the proper preheat temperature.

6. Weld indicator (24) to the inside of the canopy assembly.

   Note: Remove the slag after every weld pass.

Miscellaneous

1. Remove all lifting eyes, alignment blocks, lugs, stiffeners, and braces from the truck body if shipping is not required. Grind the welds smooth prior to touch up painting and installation to the chassis.

   Note: If the body is shipped, some lugs or lifting eyes may be needed for tie-downs.

2. Ensure that all welds have been inspected.

   Reference: "Weld Specifications and Parameters" and "Welding Instructions"

3. Clean the entire truck body.

4. Repaint the truck body, as needed.

Liner Groups

Note: Body liner plates are installed after the body assembly is completed.

Note: Weld around the entire perimeter of the liner plates. A minimum of three weld passes is necessary in the plug holes or slots.

Installation of the Rock Ejector Brackets

Illustration 110	g01622781

Note: Rock ejector bracket (25) is an optional factory installed item. Refer to Special Instructions, "Off-Highway Truck Assembly Procedure" for the correct model of truck toobtain the proper alignment of the 518-6380 Rock Ejector Brackets.

Note: The procedure that is performed is with an installed body assembly.

Note: When the body is fully assembled, all lifting eyes must be removed from the bottom of the body, floor, front wall, canopy, and side walls. Ifthe eyes on the bottom of the body are needed for transportation then the lifting eyes must be removed before installing the body to the chassis.

Inspection of Existing Gusset Plates and Addition of a Doubler Plate

Illustration 111	g06158009
Location of Gusset Plates

This repair will cover the inspection of existing gusset plates and the addition of a Doubler plate to the 4 rib locations as shown in Illustration 111

Inspection and Repair of Existing Cover plate to Gusset Weld

Illustration 112	g06158031
Areas to Inspect for Cracking

Illustration 113	g06158462
Weld Cross Section (A) Cover Plate (B) Weld (C) Gusset Plate

Inspect the areas for cracking shown in Illustration 112. Inspect cross section of the weld between the top cover plate and gusset plate as shown in Illustration 113.

Illustration 114	g06158542
Dimensions to Remove Material (A) Cover Plate (B) Weld (C) Gusset Plate (D) 50 mm (2.0 inch)

If any cracking is present from above inspection proceed to remove 50 mm (2.0 inch) of the gusset plate. CAC-A process or oxy-fuel can be used to removed material and also blend sand back to parent material. Refer to Illustration 114.

Illustration 115	g06158601
After Material Removal

Gusset plate material is removed as shown in Illustration115.

Note: Wrap fillet weld around the ends of the plates that were cut.

If no cracking is found, this step can be omitted.

Illustration 116	g06158615
Areas to Inspect for Cracking

Visually inspect the area shown in Illustration 116. If any cracking is found, follow the partial & through thickness repair process outlined below.

PARTIAL THROUGH THICKNESS REPAIR

The following section assumes that preheat (if required), crack excavation, and NDT verification have taken place and it has been verified that the crack has been completely removed and did not extend through the plate thickness. If so, the area excavated should appear similar (depending on crack depth to wall thickness) to that shown in Illustration 117.

Illustration 117	g06159022
Excavation Profile Prior to Grinding (E) Gouged Profile (F) Section Thickness

The following Illustrations 118, 119 and 120 demonstrate the sequence of steps necessary to obtain the desired joint configuration prior to welding.

Illustration 118	g06159045
Cross Sectional View of Anticipated Grinding (F) Section Thickness (G) 70 degrees

Finish grind to achieve 70 degree included angle as shown in Illustration 119.

Illustration 119	g06159047
Cross Sectional View of Prepared Joint Prior to Welding (slight radius at root) (F) Section Thickness (G) 70 degrees Included Angle (H) 35 degrees

Illustration 120	g06159051
Longitudinal View of Prepared Joint (F) Section Thickness (J) 45 degrees

Note: After completion of welding, blend sand the excess weld material flush with the surrounding plate profile.

Through Thickness Repair

The following section assumes that preheat (if required), crack excavation, and NDT verification have taken place and it has been verified that the crack has been completely removed and did extend through the plate thickness. If so, the area excavated should appear similar (depending on crack depth to wall thickness) to that shown in Illustration 121

Illustration 121	g06159132
Gouge/Grind Dimensions (F) Section Thickness (K) 60 degrees Included Angle (L) Root Face 0- 2 mm (0.08 inch) (M) Root Opening > 6 mm (0.24 inch) (Varied)

Approximate dimensions for a weld joint requiring a permanent backing strip is shown in Illustration 122 and 123.

Finish grind to achieve 60 degree included angle.

Illustration 122	g06159157
Approximate Finished Ground Dimensions Prior to Insertion of Backing Strip (F) Section Thickness (K) 60 degrees Included Angle (L) Root Face 0- 2 mm (0.08 inch) (M) Root Opening > 6 mm (0.24 inch) (Varied)

Illustration 123	g06159162
Backing Strip in Place (F) Section Thickness (K) 60 degrees Included Angle (N) 3 mm (0.12 inch) (Minimum)

The dimensions of the permanent steel, backing strip will depend on the configuration of the excavation. Every attempt should be made to accommodate a single, continuous strip that runs the full length of the weld joint. A 6.4 mm (0.25 inch) thick x 38 mm (1.5 inch) wide x the required length are the “typical” dimensions required for most applications. The steel backing strip material can be any common structural steel such as ASTM A36. Attach wire (or other means) to backing strip and insert through the root opening/gap and pull back flush to the inside of the plate surface.

The thickness of the backing strip should be kept to a minimum to assist with the insertion process. The thicker the backing strip the more difficult it will be to insert through the gap into an enclosed cavity. A 6.4 mm (0.25 inch) thick backing strip is the minimum that should be used and is sufficient to prevent burn through using the welding parameters specified. Select a backing strip width that will ensure a minimum overlap of 3 mm (0.1 inch) of the backing strip to both sides of the weld joint along the entire length as shown in Illustration 123. Make every attempt to minimize the gap (0 mm if possible) between the backing strip and the inside plate surface.

Tack weld backing strip in place. Remove wire/rod and grind ½ the thickness of the tack welds prior to finish welding to ensure proper fusion between tack welds and fill passes.

Note: After completion of welding, blend sand the excess weld material flush with the surrounding plate profile.

DOUBLER PLATE ADDITION

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Illustration 124	g06159216
Tie Off Block

1. Remove the tie off block before adding the doubler plate. Tie off block that has to removed from is outlined in Illustration 124.

   Note: Fill and blend sand any imperfections that happened from cutting off the tie off block.

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   Illustration 125	g06159218

2. Remove groove weld reinforcement from weld shown in Illustration 125.

   The reinforcement will inhibit the doubler plate from sitting flat on the rib surface.

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   Illustration 126	g06159462
   Doubler Plate Fabrication (P) 155 mm (6.1 inch) (R) 325 mm (13 inch) (S) 495 mm (19 inch) (T) 665 mm (26 inch) (U) 876 mm (34 inch) (V) 1075 mm (42 inch) (X) 1225 mm (48 inch) (Y) Radius 30 mm (1 inch) (Z) 69 mm (2.7 inch), 6 places (AA) 29 mm (1.1 inch) (AB) 109 mm (4.3 inch) (AC) Radius 60 mm (2.4 inch), 6 places (AD) 138 mm (5.4 inch) (AE) 20 mm (0.8 inch) (AF) 12 ± 1.5 mm (0.5 ± 0.06 inch) (AG) 30 degrees (W1) HFS

3. Refer to Illustration 126 to fabricate the doubler plate. This plate can be made out of ASTM A514 or equivalent material.
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   Illustration 127	g06159494
   Doubler Plate Location (AH) Doubler Plate

4. Align the Doubler plate with the center of the rib as shown in Illustration 127.
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   Illustration 128	g06159514
   Locating Doubler Plate (AH) Doubler Plate (AI) Main Rail Plate (AJ) Rib Plate (AK) 5 ± 2 mm (0.2 ± 0.08 inch) Root Opening (W2) 20 mm (0.8 inch) Fillet Weld

5. Slide the Doubler plate against the existing fillet weld, creating a 20 mm (0.8 inch) single V groove (W2). Locate the plate to a root opening of 5 ± 2 mm (0.2 ± 0.08 inch) (AK). Refer to Illustration 128 shows an example of the joint geometry that will be created when the plate is located.
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   Illustration 129	g06159648
   (AH) Doubler Plate (W3) Weld 1.5 mm (0.06 inch) square groove weld, 10 mm (0.4 inch) fillet weld (W4) Weld 1.5 mm (0.06 inch) all around square groove weld, 10 mm (0.4 inch) fillet weld, 6 places

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   Illustration 130	g06159655
   No Weld Zone

6. Follow the welding callouts shown in Illustration 129.

   Align the doubler plate (AH) at the center of the flat portion of the rib plate (AJ).

   Grind flush (AL) where doubler plate is installed.

   Note: Follow no weld zone (AM) to (AN)as shown in Illustration 129 and Illustration 130.

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   Illustration 131	g06159798
   Transition Welds (C) Gusset Plate (AJ) Rib Plate (AO) 15 mm (0.6 inch) (AP) 60 mm (2.4 inch) (W2) 20 mm (0.8 inch) Fillet Weld

7. After the doubler plate (AH) is installed. Transition the ends of the gusset plates (C) as shown in Illustration 131. The transition should be a 4:1 ration. Blend sand all transitions to a smooth transition.
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   Illustration 132	g06159817
   Locating Tie Off Assembly (AJ) Rib Plate (AQ) 350 mm (13.8 inch) (AR) 153 mm (6 inch)

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   Illustration 133	g06159826
   (W5) 8 mm (0.3 inch) Fillet weld

8. After the Doubler plates are welded, locate and weld the tie off bracket on the front side of the rib as per dimensions given in Illustration 132 and Illustration 133.

Weld Inspection and Acceptance Criteria