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TM 5-4320-306-24
3-19. REPLACE CYLINDER HEAD ASSEMBLY, ROCKER ARMS, PUSHRODS, AND TAPPETS (Continued)
2.
Loosen nuts (1) on adjusting screws (2) on inlet and exhaust valve rocker arms Insert a feeler gage (3) of
0.0059 inch (0.15 mm) thickness between valve stem and thrust pad of each rocker arm. Turn slotted adjusting
screws (2) until they are in contact with their respective pushrods and exerting approximately the same contact
pressure against pushrods as thrust pads are against the feeler gage and valve stems. Retighten hex nuts
securely
3.
Rotate crankshaft in running direction several complete revolutions.
4.
Recheck valve clearance. Make sure that feeler gage distance and contact pressures are the same as adjusted
previously in step 2 above
5.
Install new gasket (5) with sealing compound. Install cover (4), washers (2 and 3), and hex bolt (1) Tighten hex
bolt to 20.65 ft-lb (28 N m)
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