2014/08/27 Caterpillar


The Brake Accumulator Assembly has been Updated for the 797F Off-Highway Truck {4263}

Usage:

797F LAJ
Off-Highway Truck:
797F (S/N: LAJ1-UP; WSP1-UP)

ReferenceSpecial Instruction, REHS5464, "Accumulator Discharging and Charging Procedures"

Description of Change: A new piston and new seals for the brake accumulators are now used on the 797F Off-Highway Truck. The improved piston and seals will provide better sealing and service life for the accumulator.

Adaptable To:




Illustration 1g03674430

View of the piston and seals that are inside the brake accumulator group

The new 450-9200 Piston Kit improves the durability of the main seal, and can be retrofitted into the previous accumulator assembly. The 450-9200 Piston Kit can be retrofitted to the previous 377-4739 Brake Accumulator Gp and the 377-4740 Brake Accumulator Gp .

The new 451-1068 Brake Accumulator Gp includes the new piston and seals.

The new 450-9200 Piston Kit is adaptable to the following machines:

  • LAJ1-543

  • WSP1-129


NOTICE

Regardless of the serial number, the new piston kit cannot be used with the 286-0796 Brake Accumulator Gp or the 286-0798 Brake Accumulator Gp .


The accumulators with the new piston and seals are effective with the following machines:

  • LAJ544-UP

  • WSP130-UP

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