TM 10-4130-237-14
6-2.
CYLINDER BLOCK ASSEMBLY REPAIR/OVERHAUL (CONT)
2
4
2
5
2
6
2
7
2
8
2
9
NOTE
Bushing is reamed to size at the factory and can be used with a standard
valve.
Clean engine of any reaming debris and other foreign matter.
Obtain exhaust valves and intake valves.
Spread fine lapping compound around all valve faces. Pull valves into valve seats very slowly, one
valve at a time. Once each is fully seated, turn it slowly left to right until it makes several complete
turns.
Push valve out of valve chamber.
Inspect valve seat to ensure valve face has seated uniformly in valve seat.
If valve or valve seat is worn beyond usable limits or uniform wear pattern is not present, replace
valves and valve seats.
6-14
