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TM 10-3930-638-24&P
4-2. ENGINE MAINTENANCE (cont)
i. Oil Pump (cont).
8
Check
STEP
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (cont)
b. Pump gears
Check
Use feeler gage as shown and check pump
(Cont)
gears to body radial clearance. Clearance
shall not exceed 0.008 inch. Replace
oil pump if clearance exceeds this
dimension
c. Pump gears
Place plasti gage on pump gear. Install
gasket (7), cover assembly (6), cap screw
(2), and lock washer (3), Tighten cap
screws to 6-8 pounds foot torque. Re-
move cover assembly and measure plasti
gage to obtain gear to cover clearance.
Clearance shall not exceed 0.008 inch.
Replace oil pump if clearance is greater
than this dimension
9
Relief valve spring (11)
lnspect
Check that free length is 2.125 inches
and that load required to compress spring
to 1.44 inches is 18-19 pounds. Replace
if none of these conditions are met
10
Oil pump
Inspect
Replace if screen torn, or if suction tube
screen (1)
bent, dented or cracked
11
Relief valve (12)
Inspect
Replace if damaged or distorted
and spring retainer (10)
REASSEMBLY
12
Oil pump
a. Relief valve (12)
Install
Closed end toward oil pump
body (13)
b. Relief valve spring
Install
(11)
c. Spring retainer (10)
Install
Closed end outward
4-72
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