PUMP GP-PISTON 3560314 - Caterpillar

Do not disassemble the Variable Valve Actuator. There are no components of the Variable Valve Actuator that are serviceable. If the Variable Valve Actuator is disassembled, the warranty will be void.
Illustration 1 g01017260
The following procedure should be followed when variable valve actuators (2) have been removed from the engine.
Loosen jam nut (1) .
Do not turn the cylinders clockwise. If you turn the cylinders clockwise, the piston assembly will fall out of the housing. If the piston assembly falls out of the housing, damage to the piston will occur.
Turn the cylinders (2) counterclockwise until the cylinders reach the stop.Note: Do not force the cylinders. Damage will occur to the cylinders.
Install the variable valve actuators onto the cylinder head. Refer to the Specifications manual for the proper torque sequence.
Set cylinder 1 at the top center position. See Testing and Adjusting, "Finding Top Center Position for the No. 1 Piston" for details on this procedure. Note: The inlet valves should be fully closed. The rocker arm should rest on the base circle of the camshaft lobe.
Set lash (3) on the following cylinders: 1, 2 and 4. Refer to Specifications, "Variable Valve Actuators" for the amount of lash.
Place the feeler gauge between the piston pin and the rocker arm.Note: The inlet rocker arm must be in contact with valve bridge (4) when you set the lash for variable valve actuators.
Turn the cylinder clockwise until the feeler gauge fits snugly between the piston and the rocker arm.
Tighten jam nut (1). Refer to Specifications, "Variable Valve Actuators" for the proper torque for the jam nut.
Turn the crankshaft clockwise by 360 degrees. This will position the No. 6 piston at the top center on the compression stroke. Install the timing bolt in the flywheel.
Repeat Step 5 for the following cylinders: 3, 5 and 6.
Connect the proper wiring harness to each solenoid.