Special Instruction, REHS0719, "Procedure to Update the Pilot Valve on a Wheel Tractor-Scraper" is Available {5059}
- Wheel Tractor-Scraper:
- 621F (S/N: 4SK1-186)
- 623F (S/N: 6BK1-142)
- 627F (S/N: 1DL1-129)
This Special Instruction provides the necessary information in order to adapt earlier machines with new pilot valves. The pilot valves were replaced in order to improve hydraulic response and serviceability.
The special instruction is available through the normal literature distribution system. The publication can also be found on the Caterpillar Service Information System (SIS).
Caterpillar Information System:
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