- Wheel Tractor-Scraper
- 621H (S/N: DBK1-131; HKK1-139; NYY1-129; EAZ1-125)
- 621K (S/N: WTA1-127; WTE1-135; WTL1-104; WTP1-117)
- 623H (S/N: EJD1-105; DBF1-175)
- 623K (S/N: WTB1-251; WTM1-117)
- 627H (S/N: LCT1-115; DBW1-348)
- 627K (S/N: WTC1-281; WTN1-120)
- 621K (S/N: WTA1-127; WTE1-135; WTL1-104; WTP1-117)
Description Of Change: A new hose assembly is now used in the cushion hitch lines group on machines listed above. New hose assembly is made-up of high temperature, medium pressure, wire braid reinforced general-purpose hose material. New hose assembly will provide improved performance as the machine oscillates from side to side.
Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all machines after the listed serial numbers.
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| Illustration 1 | g06236989 |
New 543-5276 Hose As (1) replaces the former 441-3488 Hose As in the 424-8955 Cushion-Hitch Lines Gp on K-series machines.
New 543-5276 Hose As (1) replaces the former 441-3488 Hose As or 346-6228 Hose As in the 310-5530 Cushion-Hitch Lines Gp on H-Series machines.
| Required Part | ||||
| Item | Qty | New Part Number | Description | Former Part Number |
| 1 | 1 | Hose As | ||
| (1) | Hose assembly is not serviceable. Refer to the Hydraulic Information System (HIS) for the information to build the new hose assembly. |
| (2) | The former part number listed is for reference only and may differ. |