TM 5-4320-300-14
6-9. VALVES, CAMSHAFT, AND TIMING GEARS (CONT)
Location/Item
Action
Remarks
INSTALLATION
39. Valve face
Apply a light coat of Prussian blue or similar
The most desirable
contact check
paste to valve seat insert. Lower stem of re-
area of contact is
placement valve in valve guide and bounce the
the center of the
valve on the seat. Do not rotate the valve.
valve face.
This procedure will show the area of valve
face contact.
40. Valve ad-
If replacement valves do not show contact
justment
with valve seat insert at center of valve
face, the valve will have to be ground.
41. Valve in-
Lubricate valve stems with sulphurized oil
stallation
(E.P. type) and slide valves all the way into-
the guides. Hold valves in place temporarily
with a strip of masking tape. Turn cylinder
head right side up on workbench. Place a
board under the head to support valves and
to provide clearance between cam followers
and bench.
42. Valve guide
Lubricate valve stem
oil seal
and new oil seal with
MIL-L-2104 oil and
start oil seal carefully
over valve stem. Drive
seal down slowly on
cylinder head.
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