A Procedure to Remove the Fourth Accumulator and Expansion Tank on Certain 793F CMD Off-Highway Truck is Available {4331, 5057} Caterpillar

Off-Highway Truck/Tractor

793F (S/N: SSP1-1233; RBT1-235)

Reference: Special Instruction, M0100593, "Procedure to Remove the Fourth Accumulator And Expansion Tank on Certain 793F CMD Off-Highway Trucks"

Description Of Change: A procedure to remove the fourth accumulator and expansion tank is available for the machines listed above.

Removing the steering accumulator is not required, however new conversions no longer require installation of steering accumulator and steering expansion tank on top of the right hydraulic tank. Leaving out the operations related to the steering accumulator and expansion tank saves 36 man-hours in the build, reduces the potential for leaks, and simplifies filling the hydraulic oil level.

The software has been improved to reduce unnecessary steering movement, and hence reduce "Low Secondary Steering Pressure" warnings. Revert to the standard steering sight gauge locations so that the steering oil volumes will be correct when the technicians are checking for oil levels.

Adaptable To:

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Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.

Illustration 1	g06394452
Location of fourth accumulator group

Illustration 2	g06394459
Location of expansion tank

Procedure to remove the fourth accumulator and expansion tank to is adaptable to the machines within the listed serial numbers, and is effective in production with all the machines after the listed serial numbers.

For the complete procedure, parts, and tools required to remove the fourth accumulator and expansion tank, refer to the most recent version of Special Instruction, M0100593, "Procedure to Remove the Fourth Accumulator And Expansion Tank on Certain 793F CMD Off-Highway Trucks".

The special instruction can be found on Caterpillar Service Information System (SIS) and through the normal literature system.