- Off-Highway Truck:
- 793D (S/N: FDB1-UP)
ReferenceSpecial Instruction, REHS8648, "Procedure to Improve the Hydraulic Oil Cooler Lines Group on the 793D Off-Highway Trucks".
Description of Change: A new check valve group is now used on the machines listed above. The addition of the check valve group prevents the loss of hydraulic oil from the tank during filter changes.
Adaptable To: For a complete list of parts and the procedure for installing the new 420-6206 Check Valve Gp to the field machines, refer to Special Instruction, REHS8648, "Procedure to Improve the Hydraulic Oil Cooler Lines Group on the 793D Off-Highway Trucks".
The special instruction can be found on the Caterpillar service information system (SIS) and through the normal literature distribution system at your local Cat dealer.
The 420-6206 Check Valve Gp is adaptable to the machines FDB1-1823 and effective in production with machines FDB1824-UP.