3054 Engine for Caterpillar Built Machines Caterpillar

Installation Procedure

Show/hide table

Illustration 1	g00635153
Typical example

1. Install pushrods (4).

   Note: Ensure that the pushrods are installed in the original location and that the pushrods are seated in the valve lifters correctly.

2. Install a new oil seal in the oil supply hole in the cylinder head.
   Show/hide table

   Illustration 2	g00635152
   Typical example

3. Put rocker shaft assembly (3) in position on the cylinder head. Make sure that the connection for the oil supply is installed correctly into the oil seal.

   Note: Ensure that the adjustment screws are properly seated in the ends of pushrods (4).

   Note: It may be necessary to loosen the adjustment screws on each rocker arm. This will help prevent a bent valve or a bent pushrod during the installation of the rocker shaft.

4. Lubricate nuts (1) and bolt (2) with clean engine oil.

5. Install nuts (1) and bolt (2).

6. Alternately tighten the nuts and the bolt. Start from the center and work toward the outside. Tighten the nuts and the bolt on an aluminum bracket to a torque of 40 N·m (30 lb ft). Tighten the nuts and the bolt on a cast iron or a steel bracket to a torque of 75 N·m (55 lb ft).

7. Adjust the inlet valve lash to 0.20 mm (0.008 inch) and adjust the exhaust valve lash to 0.45 mm (0.018 inch). Refer to Testing and Adjusting, "Air Inlet and Exhaust System" for more information on adjusting the valve lash.

End By:

1. Install the valve mechanism cover. Refer to Disassembly and Assembly, "Valve Mechanism Cover - Remove and Install".