(4) Loosen adjusting screw lock nut (“2,” [fig. 16]) slightly before turning adjusting screw ([fig. 16]).
(5) Adjust inlet valve tappets to 0.004–inch minimum, and 0.005–inch maximum clearance between valve stems and tappet (“1” and “4,” [fig. 16]). Use thickness gage to determine clearance; recheck (correcting if necessary) clearance after lock nut has been securely tightened.
(6) Adjust exhaust valve tappets to 0.006–inch minimum, and 0.007–inch maximum clearance between valve stems and tappet. Use thickness gage to determine clearance; recheck (correcting if necessary) clearance after lock nut has been securely tightened.
(7) Before turning down valve spring covers, inspect paper gasket between each cover and tappet guide. If broken or damaged, fit a new gasket to prevent oil leak. Turn down and securely tighten valve spring covers.
RA PD 315712
Figure 17—Oil Pump Removed