3126B Marine Engine Caterpillar

Installation Procedure

1. Clean the injection actuation pressure control valve and the components for the injection actuation pressure control valve.

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Illustration 1	g00615757

2. Install new O-ring seals (4) and (6), and backup ring (5) on the injection actuation pressure control valve. Lubricate the O-ring seals with clean engine oil.

3. Use Tool (A) in order to install the injection actuation pressure control valve on the unit injector hydraulic pump. Tighten the injection actuation pressure control valve to a torque of 50 ± 5 N·m (37 ± 4 lb ft).

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Illustration 2	g00639954

4. Install solenoid valve (7), spacer (8), and nut (3) on the injection actuation pressure control valve (1). Tighten nut (3) to a torque of 5.5 ± 1.5 N·m (49 ± 13 lb in).

5. Reconnect wiring harness plug (2) to the injection actuation pressure control valve.