Usage:
NOTE: This Program can only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS5526" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.
Termination Date
December 31, 1999Problem
The track adjuster rod may break and needs to be replaced on certain 320, 320L and 320N Excavators.
Affected Product
Model & Identification Number
320 (4ZJ1-825)
320L (3XK1-3458)
320N (9WG1-1622)
Parts Needed
- 1 - 3E8024 Nut - Full
- 1 - 7I7733 Washer
- 1 - 7I7734 Ring - Back-up
- 2 - 7X2536 Bolt
- 1 - 951703 O-Ring
- 1 - 1225076 Rod
- 1 - 1225253 Strip
- 1 - 7I7733 Washer
Action Required
See the attached rework procedures.
Service Claim Allowances
NOTE: This is a 10-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
Attach.
- (1-Rework Procedure)
Rework Procedure
1. Disassemble the track adjuster according to the Disassembly and Assembly section of the Service Manual.
2. Increase the diameter of the 1153678 support from 38.00 ±0.30 mm to 44.00 ±0.30 mm. See Illustration 1.
3. Increase the diameter of the 7Y1780 cylinder from 40.012 ± 0.012 mm to 45.012 ± 0.012mm. Machine a new seal groove to diameter 50.031 ± 0.031 (See Illustration 2, detail A). Machine a new chamfer as shown in section B-B in order to make the assembly of the larger rod easier.
4. As the new 1225076 rod is larger, the diameter of the head of the rod has to be reduced to 56.0 ± 0.8 mm. See Illustration 3.
5. Be careful that machined parts do not present any beard that could scratch the parts during the assembly. The scratches could create grease leakage.
6. Assemble the track adjuster according to the Disassembly and Assembly section of the Service Manual.
