SEAL 8F7681 - Caterpillar

Illustration 1 g02712153
Illustration 2 g02718357
The improvements are effective to the machines listed. All parts supplies will include the improvements. No part number changes have been made.In case of machine reporting cylinder drifting, inspect the Piston Seal for damage. Replace seals if necessary. Refer to Disassembly and Assembly, "Lift Cylinder". Inspect the rod end port (A) of the lift cylinder for sharp edges. Deburr area (B) if necessary.
Illustration 3 g02712151
Inspect the 263-1028 Manifold Block for burrs and overhanging material.If burrs or sharp edges are found, removal can be performed mechanically. Take care to avoid additional contamination during the process. The manifold may be replaced if needed. All parts within the pars system have been checked and passed.If port intersections show burrs or potentially detachable material, attempt to deburr cross port intersections, but if not feasible, consider replacing with a redesigned manifold.This information is adaptable to the following machines.
(S/N: JKM932-1635)
(S/N: LKM1030-1655)
(S/N: MCC174-492)
(S/N: MJC781-1573)
(S/N: JNJ400-654)This information is effective with the following machines.
(S/N: JKM1636-UP)
(S/N: LKM1656-UP)
(S/N: MCC493-UP)
(S/N: MJC1574-UP)
(S/N: JNJ655-UP)