- Off-Highway Truck:
- 785C (S/N: APX1-UP)
- 785D (S/N: DMC1-UP; MSY1-UP)
Description of Change: A new sealing system for the rear suspension group is now used on the machines listed above. The new assembly includes a new U-Cup seal, backup ring, buffer seal assembly, and wear ring. The rear suspension head assembly design has been improved to accommodate the new sealing component.
| Required Parts List | ||||
| Item | Quantity | New Part Number | Description | Former Part Number |
| 1 | 1 | 390-6823 | U-Cup Seal | 329-8979 |
| 2 | 1 | 331-0335 | Buffer Seal As | - |
| 3 | 1 | 390-6824 | Backup Ring | - |
| 4 | 1 | 440-0918 | Wear Ring | - |
| - | 1 | 442-3609 | Head As | 107-2858 |
| - | 1 | 456-8724 | Rear Suspension Gp | 311-7789/107-2860 |
 | |
| Illustration 1 | g03681282 |
New 390-6823 U-Cup Seal (1) replaces the former 329-8979 U-Cup Seal in the rear suspension group.
Note: When installing the new U-Cup Seal, ensure that the opening of the U-Cup is facing the pressure cavity of the strut.New 442-3609 Head As replaces the former 107-2858 Head in the rear suspension group.
The new head assemblies are adaptable to machines APX1-2378, MSY84-649, DMC1-175, and required in order to implement the new sealing system.
The new strut group and sealing system are effective in production with machines APX2379-UP, MSY650-UP, DMC176-UP.