Installing the Updated Hoses For the Tilt Lines and the Implement Pump{5057, 5084} Caterpillar

Track-Type Tractor:

D11R (S/N: AAF1-279; 9TR1-UP; 9XR1-UP; 7PZ1-1582)

Introduction

This Special Instruction, REHS3091, "Installing the Updated Hoses For the Tilt Lines and the Implement Pump" provides the procedure for installing the bracket for the tilt lines, the tee, and the hose assemblies.

Do not perform any procedure that is outlined in this publication, until you read the information and you understand the information.

Note: The improvement to the tilt lines is a two-step improvement "A" and "B" that can be done together, or can be done separately.

The "A" portion provides improved service life for the supply hose for the tilt cylinder.

The "B" portion provides improved torque retention for the tilt lines at the implement valve.

Note: Refer to the end of Special Instruction, REHS3091 for additional components that are required on (S/N: 9TR) machines.

Warnings

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

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Accidental engine starting can cause injury or death to personnel working on the equipment. To avoid accidental engine starting, disconnect the battery cable from the negative (−) battery terminal. Completely tape all metal surfaces of the disconnected battery cable end in order to prevent contact with other metal surfaces which could activate the engine electrical system. Place a Do Not Operate tag at the Start/Stop switch location to inform personnel that the equipment is being worked on.

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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, and the oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand.

Required Parts For Step "A"

Assembly Process For the Hose For the Pump and Tee "A"

Illustration 1	g01396162

1. Remove the floorplates and the rear bottom guards.

2. Remove hose assembly (1) that is routed between the pump and the implement valve. Discard the hose assembly. Retain the mounting hardware. Refer to Illustration 1.

3. Disconnect hose assembly (8) and hose assembly (9) from tee (2). Retain the hose assemblies and the mounting hardware. Discard the seal. Refer to Illustration 1.

4. Remove the 149-1333 Tee (2). Discard the tee. Refer to Illustration 1.

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Illustration 2	g01396155

5. Install tee (3) and seal (14) with the existing bolts and washers. Refer to Illustration 2.

   Note: Clean the mounting surface on the case for tee (3) prior to installation.

6. Install hose assembly (4), seal (11), and seal (12) with flanges (16), bolts (17) and washers (18). This hose assembly goes to the center port of the implement valve. Refer to Illustration 2.

7. Install hose assembly (5), seal (12), and seal (13) with flanges (16), bolts (17) and washers (18). This hose assembly goes to the small section of the implement pump. Refer to Illustration 2.

   Note: A longer hose 297-3028 Hose Assembly (15) is required for Tractors S/N:7PZ1-561 instead of 291-4345 Hose Assembly .

8. Install O-ring plug (6) and seal (7) in two places on tee (3). Refer to Illustration 2.

9. Reinstall hose (8), hose (9), and seal (10) with the existing hardware. Refer to Illustration 2.

Required Parts For Step "B"

Assembly Process For the Two Tilt Lines and Bracket "B"

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Illustration 3	g01281091

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Illustration 4	g01291902

1. Remove both 148-7214 Hose Assemblies (1) that run along the left-hand frame to the implement valve. Discard both hose assemblies. Retain the mounting hardware. Refer to Illustration 3.

   Note: Grind 15 ± 2 mm (0.591 ± 0.079 inch) from the top of three bosses (AA) in order to gain clearance for the wrench when the new 148-7214 Hose Assemblies are installed. Refer to Illustration 4.

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Illustration 5	g01396172

2. Remove two bolts (2) and two washers (3) for the implement valve. Discard the bolts, but retain the washers. Refer to Illustration 5.

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Illustration 6	g01291938

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Illustration 7	g01281963

3. Install bracket (4) with washers (5) that were removed in step 2 between bracket (4) and rubber mount (6). Use bolt (7) and washer (8). Hand tighten the bolts only. Do not torque the mounting bolts. Refer to Illustration 6.

   Note: Rotate the fitting and the hose (9) in order to eliminate interference with bracket (4). Refer to Illustration 7.

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Illustration 8	g01396173

4. Rotate fitting (11) 45 degrees in order to prevent interference with hose (12). See Illustration 8 for orientation of fitting assembly (11). Refer to Illustration 8.

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Illustration 9	g01396183

5. Remove hose assembly (18). Discard the seals. Remove the straight fitting (13) from block (14). Discard the straight fitting. Install elbow (15), seal (16), and seal (17). Refer to Illustration 9 and Illustration 10.

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Illustration 10	g01396189

6. Reinstall hose (18) with the straight coupling to block (14) and the 90 degree coupling (19) to the implement valve (20) with seal (17). Refer to Illustration 10.

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Illustration 11	g01396193

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Illustration 12	g01282767

7. Install hose assemblies (21) with seal (22) and seal (23). Refer to Illustration 12.

   Note: The new 294-9516 Hose Assemblies are made with permanent couplings in order to fit properly with the clip, the grommets, and the new bracket.

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Illustration 13	g01281997

8. The centerlines for the hose assemblies and fittings (10) must remain parallel to each other and perpendicular to the ground. Torque the nuts on the fittings in order to retain the position. Refer to Illustration 13.

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Illustration 14	g01286864
Dimensions for temporary spacer (24) (A) Fillet weld around the two twelve millimeter nuts (B) 8 mm (5/16 inch) thick (C) 194 ± 2 mm (7.64 ± 0.079 inch) (D) 25 ± 2 mm (0.984 ± 0.079 inch) (E) 50 ± 2 mm (1.969 ± 0.079 inch) (F) 122.6 ± 2 mm (4.8268 ± 0.079 inch) (G) 25 ± 2 mm (0.984 ± 0.079 inch)

9. Fabricate a temporary spacer (24) with the dimensions in Illustration 14.

   Note: Temporary spacer (24) is required in order to maintain orientation of the bracket to the two hoses for the tilt lines, when the bolts that mount the bracket are torqued.

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Illustration 15	g01292071

10. Assemble temporary spacer (24) to the forward side of bracket (4) with bolts (30) and washers (31). Refer to Illustration 15.

11. Hold forward pressure on the rear surface of bracket (4) in order to ensure that temporary spacer (24) contacts the couplings on the tilt lines (21) uniformly. Tighten bolts (7) and washers (8) that mount the implement valve in sequence. Tighten bolt (A) first and tighten bolt (B) last. Refer to Illustration 12 and Illustration 15.

12. Remove temporary spacer (24). Retain the temporary spacer for future installations.

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Illustration 16	g01283106

13. Assemble clips (27), clips (28), and grommets (29) to the tilt lines with bolt (30), washer (31), washer (8), and nut (32). Refer to Illustration 16.

14. Refer to Operation and Maintenance Manual, SEBU6250 for D11R S/N:AAF in order to prepare the machine for operation. Check fluid levels. Check for leaks.

    Refer to Operation and Maintenance Manual, SEBU7185 for D11R S/N:7PZ in order to prepare the machine for operation. Check fluid levels. Check for leaks.

Additional Components That Are Required On S/N:9TR Machines For Step "A"

Note: The Steps that are listed below are only for S/N:9TR machines.

1. Replace hose (8) with 130-9456 Hose As and two 1P-3705 Rectangular Seals .

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Illustration 17	g01354837

2. Replace hose (9) with 130-9457 Hose As and two 1P-3705 Rectangular Seals . Refer to Illustration 17.

Additional Components That Are Required On S/N:9TR Machines For Step "B"

Note: The Steps that are listed below are only for S/N:9TR machines.

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Illustration 18	g01395799

1. Install two 6V-9008 Elbows and two 7M-8485 O-Ring Seals (33) .

2. Install two 8T-4834 Swivel Orifice Tee's and four 5K-9090 O-Ring Seals (34) .

3. Install two 9S-4191 O-Ring Plugs and two 153-4906 O-Ring Seals (35) to tee's (34) .

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Illustration 19	g01395818

4. Install one 7G-5984 Clip , one 7G-5985 Clip , and one 7G-5986 Grommet (36) .

5. Install four 1P-5766 Half Flanges , eight 8C-6877 Bolts , and eight 8T-5360 Washers (37) .