STUD-PULLER 9U6698 - Caterpillar

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.
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 "PS8355" 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
June 30, 1996Problem
The handrails may crack on certain Challenger 65C, 70C, 75C and 85C Tractors.
Affected Product
Model & Identification Number
CH65C (2ZJ1-1759)
CH70C (2YL1-1293)
CH75C (4KK1-2006)
CH85C (9TK1-1520)
Parts Needed
2 - 2K4973 Locknut2 - 4M0200 Stud-Welding8 - 6N6984 Grommet Assembly8 - 5S7383 Bolt16 - 8T4226 Washer-Plate18 - 8T4896 Washer8 - 6V8801 Nut1 - 1231005 Handrail Assembly1 - 1231006 Handrail AssemblyAction Required
Parts Stock
Remove all 1010352 and 1010353 Handrail Assemblies from Parts Stock.
Affected Product
See attached rework procedure.
Service Claim Allowances
Parts Stock
Submit one claim for all 1010352 and 1010353 Handrail Assemblies removed from Parts Stock.
US and Canadian Dealers Only - When submitting a Parts Stock claim use 99Z00001 in the Product Identification Number Field.
Affected Product
This is a 2.5-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.(1-Rework Procedure)Rework Procedure
1. Remove the existing 1010352 and 1010353 Handrail Assemblies.2. Inspect the step assembly for cracks near the handrail mounting locations. Repair any cracks as necessary.3. Use the existing holes and the templates in Illustrations 3 and 4 as a basis to drill the new holes in the locations shown in Illustration 1. Make sure to deburr the 22.5 mm holes.4. Install and weld in weld studs (Item 1) into the 10 mm holes as shown in Illustration 1.5. Install the new handrails using bolts, washers, nuts and mount (Items 2, 3, 4, 5, and 6) as shown in Illustration 2. Make sure the mount (Item 5) is slid in all the way to the shoulder before tightening the bolts. Make sure the mount is installed from the outside of the step assembly.
6. Install washers and locknuts (Items 3 and 7) on studs (Item 1) as shown in Illustration 2. Do not tighten the locknut down against the handrail assemblies (Items 8 and 9). Instead, tighten until the gap between washer and handrail is 0.5 +0.0/-0.25 mm as shown in Illustration 2.
Illustration 1
Parts List For Illustration 2
Illustration 3
Illustration 4