Valve Rocker Arm and Push Rod Installation
- NOTE:
Ensure the pushrods seat properly to the ends of the rocker arms.
Inspect the rocker arm and pushrod assemblies before installation.
- NOTE:
- When using the valve train components again, always install the components to the original location and position.
- Valve lash is net build. No valve adjustment is required.
- Lubricate the flange of the valve rocker arm bolts with clean engine oil.
- Lubricate the valve rocker arms and pushrods with clean engine oil.
- Ensure the pushrods seat properly to the valve lifter sockets.
- The rocker arm bolts are not serviced separately.
- Ensure the pushrods seat properly to the ends of the rocker arms.
- DO NOT tighten the rocker arm bolts at this time.
Install the valve rocker arm and pushrod assemblies (1).
Rotate the crankshaft until number 1 piston is at top dead center of compression stroke.
In this position, cylinder number 1 rocker arms will be off lobe lift, and the crankshaft sprocket key will be at the 1: 30 position. The camshaft and crankshaft sprocket alignment marks (1, 2) will be in the 12 o'clock position. If viewing from the rear of the engine, the additional crankshaft pilot hole, non-threaded, will be in the 10: 30 position.
The engine firing order is 1, 8, 7, 2, 6, 5, 4, 3.
Cylinders 1, 3, 5, and 7 are left bank.
Cylinders 2, 4, 6, and 8 are right bank.
- With the engine in the number 1 firing position, tighten the following valve rocker arm bolts:
- Tighten the exhaust valve rocker arm bolts 1, 2, 7, and 8 to 30 N.m (22 lb ft).
- Tighten the intake valve rocker arm bolts 1, 3, 4, and 5 to 30 N.m (22 lb ft).
- Rotate the crankshaft 360 degrees.
- Tighten the following valve rocker arm bolts:
- Tighten the exhaust valve rocker arm bolts 3, 4, 5, and 6 to 30 N.m (22 lb ft).
- Tighten the intake valve rocker arm bolts 2, 6, 7, and 8 to 30 N.m (22 lb ft).
Refer to Fastener Caution