TM 10-4320-307-24
4-15
CAMSHAFT ASSEMBLY INSPECT/REPAIR (CONT).
f.
Put camshaft (1) in a vertical position with gear fit area
(nose) pointing up.
g.
Apply grease to camshaft (1) gear fit area.
h.
Heat camshaft gear (3) in an oven at 500°F (260C) for
a minimum of one hour.
Wear protective gloves when handling parts
that have been heated, to prevent personal
injury.
I.
Remove gear (3) from oven.
NOTE
Camshaft gear must be installed within 30 seconds after removal from oven.
j.
Stand camshaft (1) on a wood block, in vertical position with gear fit area up.
k.
Align keyway in gear (3) with key (2) In camshaft (1), and with timing marks on gear facing away from camshaft,
install gear on camshaft. Use a brass drill and hammer to drive gear against camshaft shoulder.
I.
Use feeler gauge to measure clearance between camshaft gear (3) and shoulder on camshaft (1). Clearance
must not exceed 0.005 inch (0.13 mm).
7.
Check threads on camshaft plug (4) for damage. Use new plug if damaged.
8.
Install camshaft plug (4) into nose end of camshaft (1).
9.
Apply a thin film of grease to both sides of thrust washer (5).
CAUTION
The oil grooves on thrust washer must be toward camshaft gear to prevent thrust washer failure.
10. Install thrust washer (5) on camshaft (1).
NOTE
Keep camshaft in a vertical position with gear up, until gear has cooled.
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