B4000 Regular Cab 4WD V6-4.0L OHV (1997)
Rocker Arm Assembly: Service and Repair
REMOVAL
1. Remove the cylinder head cover and gaskets.
2. Remove the rocker arm shaft bolts.
CAUTION: Loosen the bolts gradually to prevent bending the rocker arm shaft.
3. Remove the rocker arm shaft assembly.
4. Remove the push rods.
NOTE: Mark the position of each push rod for installation.
INSTALLATION
1. Install the push rods.
NOTE: Install the push rods in the position which they were removed from.
2. Install the rocker arm shaft assembly.
3. Install the rocker arm shaft bolts.
^
Tighten to 32 Nm (24 ft. lbs.) and then an additional 90 degrees.
CAUTION: The bolts should be tightened gradually; two turns at a time.
NOTE: Apply clean engine oil to the rocker arm and shaft assemblies.
4. Install the cylinder head covers and gaskets.