Service Manual

6-6 COMPRESSION
TAPPET CLEARANCE CHECK
4. Install all parts related to valve repair.
AND REPAIR
Reassembly is the reverse of removal.
Since
valve repairs change tappet clearance (valve-
CAUTION: After installing valves and springs,
to-tappet), check the clearances (intake and ex-
check retainers are positioned Correctly.
DO
haust sides). Make Sure to do this when engine
not
Use molybdenum dissulfied when installing
is cold. valve in cyl. block.
1. Insert valves in their respective positions in
cyl. block.
2. Turn crankshaft until piston is at highest
position in compression stroke. Then insert
a thickness gauge (A) between valve stemsend
and tappet to check tappet clearance.
Specified Tappet Clearance (Cold)
Tappet Clearance
3. If the clearance is less than specified, grind
the end of
valve stem to obtain the specified
tappet clearance.
To Grind Valve Stem End:
Place valve in valve lapping guide (A) and slide
the stem end over oil stone back and forth.