Product Support Program For Updating Screed Burners On Certain AP-800, AP-800B, AP-1050, And AP-1200 Asphalt Pavers Caterpillar

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4701" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Termination Date

Problem

Some updates may be needed on certain AP-800, AP-800B, AP-1050, and AP-1200 Asphalt Pavers to improve the performance of their screed burners.

Affected Product
Model & Identification Number

AP800 (1BF136,1BF138,1BF140,1BF141,1BF143,1BF147,1BF148,1BF150,1BF153,1BF155,1BF156,1BF163,1BF165,1BF166,1BF170-173,1BF180-182,1BF186,1BF188,1BF194,1BF198,1BF200,1BF202-204,1BF206,1BF213,1BF223.)

AP-800B (1BF226,1BF227,1BF233,1BF240,1BF245,1BF246,1BF248,1BF250,1BF251)

AP-1050 (1JG46,1JG58,1JG66,1JG72,1JG79,1JG80,1JG85)

AP-1200 (2JD168,1JD225,1JD242,1JD248,1JD249.)

Parts Needed

2 - 4B4863 Washer

16 - 5B3180 Nut

2 - 8C2992 Nozzle

2 - 5E9915 Outer Baffle Assembly

2 - 5E9922 Chamber Inlet Assembly

2 - 5E9923 Inner Baffle Assembly

2 - 9G9150 Clip

2 - 7J8611 Pipe Elbow

2 - 2N3479 Screw

2 - 6R0511 Plate ^(A)

2 - 6R0513 Plate ^(B)

2 - 6R0527 Plate ^(B)

2 - 6R3279 Plate ^(A)

2 - 7R0051 Chamber Liner Assembly

2 - 7R0055 Supply Inlet Assembly

2 - 7R3025 Clamp

2 - 7R6111 Glow Plug

2 - 7R6364 Chamber Assembly

2 - 7R9853 Screed Blower Assembly

16 - 8T4224 Washer

4 - 8T4896 Washer

2 - 8T8014 Adapter

4 - 8T9371 Bolt

16 - 6V8189 Nut

2 - 310249 Locknut

8 - 816966 Shock Mount

Action Required

See attached rework procedure.

Service Claim Allowances

NOTE: No labor allowance is authorized.

Parts Disposition

Handle all parts in accordance with your Warranty bulletin on warranty parts handling.

Attach.

(1-Rework Procedure)

Rework Procedure

1. Remove hand rails, steps, and vibrator shaft covers according to the Disassembly & Assembly Manual, KEBR1234.

2. Remove vibrator shafts and bearings.

3. Disconnect fuel lines and electrical wiring and remove burner assemblies.

4. Make a template from drawing in Illustration 1. Use template to mark holes in the screed braces.

Illustration 1. Make template using these dimensions.

5. Cut holes in braces, three braces per frame (Item A, Illustration 2).

Illustration 2. Use template to cut holes in plates (A).

6. Weld new plates (3) as shown in Illustration 3 and Illustration 4.

Illustration 3. Location of updated parts.

Illustration 4. Weld plates (3) under burners.

7. Install vibrator shafts, bearings, and other vibrator components back on machine.

8. Install cover plates (4).

9. Assemble new burner assemblies, Illustration 4, Items 1 and 2, and Illustrations 5 and 6.

Illustration 5. Orientation of left hand burner (871457)

Illustration 6. Orientation of right hand burner (871458)

10. Install the new burner assemblies on the cover plates.

11. Connect the fuel lines and electrical wiring to the burners.

12. Test the system.

13. Install hand rails and steps back on machine.