TM 5-3895-376-14&P
5-9. VALVES MAINTENANCE INSTRUCTIONS - Continued
c.
Repeat steps a. and b. with the intake valve.
INSPECTION
With valves (2 and 9) installed in cylinder head,
3.
1.
Inspect valves (2 and 9) for scoring on the 45
measure distance from bottom face of cylinder
face surface.
head to bottom face of valves. If distance ex-
ceeds 0.0236 in. (0.600 mm), replace the valve.
2
Inspect stems of valves (2 and 9) and valve
guides (14) as follows:
Inspect valve springs (4 and 11) for cracks or bro-
4.
ken sections.
a.
Install exhaust valve (2) in cylinder head with
stem extending fully through the valve guide
Inspect exhaust roto cap (5), by spinning the cap.
5.
Binding movement or presence of a rattling
b
Using a dial indicator set at measuring point
sound indicate a defective roto cap.
on valve stem as indicated, shift the valve
stem laterally and note the amount of move-
ment. If movement exceeds 0 0059 in (0.15
mm). both the valve and the valve guide must
be rep!aced.
5-20