TM 5-3895-346-14
VALVE OPERATING MECHANISM
ENGINE OVERHAUL
the upper spring seat and place the push rod assembly in the cam follower. Then thread the locknut on the
push rod until the spring is compressed sufficiently to permit the spring retainer to be installed. Then install the
spring retainer.
4. Remove the nut, flat washer, and tool. Then reinstall the locknut and thread it as far as possible on the
push rod.
CYLINDER HEAD REMOVED FROM ENGINE
Refer to Fig. 8 and install the cam follower and push rod as follows:
1. Assemble the serrated lower spring seat, spring, upper cup-shaped spring seat, and locknut on the push
rod.
NOTE
The current cup-shaped upper spring seat can be used with either the former or
current spring.
2. With the spring retainer in place in the cylinder head, slide the push rod assembly in position from the
bottom of the head.
3. Note the oilhole in the bottom of the cam follower. With the oilhole directed away from the exhaust
valves, slide the cam follower in position from the bottom of the head.
4. Attach the follower guide to the cylinder head to hold the group of three cam followers in place. Tighten
the guide bolts to 12-15 lb ft (16-20 Nm) torque. Check to be sure there is at least 0.005-inch clearance
between the cam follower legs and the cam follower guide (Fig. 9). If there is insufficient clearance, loosen the
guide bolts slightly and tap each corner of the guide with a brass rod (Fig. 10). Then retighten the bolts to the
specified torque.
Figure 9. Checking Cam Follower to
Guide Clearance
Figure 10. Adjusting Cam Follower
Guide
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