RIM AS 3118240 - Caterpillar

Illustration 1 g00789869
(1) Plug
(2) O-ring seal
(3) Check valve assembly
(4) O-ring seal
(5) Gasket Note: Use of a platform may be necessary to reach the prechamber check valves.Note: Refer to the engine's Disassembly and Assembly manual for instructions on removal and installation of the check valves.
Remove check valve assembly (3) and gasket (5).
Keep plug (1) for reassembly. Discard the other parts. Obtain new parts for reassembly.
Install a new gasket and a new O-ring. Install the clean, dry check valve assembly and torque to 115 N m (85 lb ft).
Do NOT overtighten the plug for the check valve. Tighten to 15 N m (11 lb ft).