3-33.1. VALVE AND INJECTOR OPERATING MECHANISM - MAINTENANCE INSTRUCTIONS (Cont).
CLEANING AND INSPECTION (Cont)
Examine the cam follower rollers for scoring, pitting or flat spots.
The rollers must turn freely on their pins. Measure the total
diametric clearance and side clearance. Install a new roller and
pin if the clearances exceed those shown below. Cam followers
stamped with the letter "S" on the pin, roller and follower body
are equipped with an oversize pin and roller. The same
clearances apply to either a standard or oversize cam follower
Examine the camshaft lobes for scoring, pitting or flat spots.
Replace the camshaft if necessary. (Refer to Direct Support
Check the cam follower-to-cylinder head clearance.
clearance must not exceed .006 inch (0.015 cm) with used parts.
Examine the cam follower bores in the cylinder head to make
sure they are clean, smooth and free of score marks. If
necessary, clean up the bores.
Inspect for wear.
Examine the cam follower springs for wear or damage.
Check the spring load. Replace a spring when a load
of less than 172 lbs (765 N) will compress it to a
length of 2.125 inch (5.398 cm).