3126 Truck Engine Military Caterpillar

1. Install new O-ring seals on the six plugs. Install the six plugs in the inlet manifold.

2. Install air temperature sensor (3) in inlet manifold (9) .

3. Install the wiring harness to the inlet manifold with new wire straps. Attach the wiring harness connector to the engine inlet manifold with tool (A). Tighten the screw to a torque of 9 ± .1 N·m (79 ± 1 lb in).

   Note: Do not overtighten the screw.

4. Install engine inlet manifold (9) to the cylinder head assembly with a new gasket and 18 bolts (4) .

5. Install six wiring harness connectors (2) to the fuel injector pumps.

6. Connect tube assembly (6) to inlet manifold (9) .

7. Secure the wiring harness to the engine with new straps (8) .

8. Install injection actuation pressure sensor (7) to the engine.

9. Install the wiring harness connectors to the two speed-timing sensors.

10. Connect coolant temperature sensor (1) to the wiring harness. Use new straps and secure the coolant temperature sensor to inlet manifold (9) .

End By:

1. Install the air inlet heater solenoid. Refer to Disassembly and Assembly, "Air Inlet Heater Solenoid - Remove and Install".
2. Install the air inlet heater. Refer to Disassembly and Assembly, "Air Inlet Heater - Remove and Install".
3. Install the rocker arm assemblies and pushrods. Refer to Disassembly and Assembly, "Rocker Shaft and Pushrod - Install".