LUBE OIL PUMP ASSEMBLY REPAIR (CONT).
Inspect drive shaft (6) and lube oil pump driven gear
(7) for damage and worn or broken gear teeth. Gears
must be replaced if pitting is present over more than
1/4 width of teeth. If necessary, replace drive shaft or
gear using arbor press.
10. Inspect idler shaft (8) and lube oil pump idler gear (9)
for damage and worn or broken gear teeth. Gears must
be replaced if pitting is present over more than 1/4
width of teeth. If necessary, replace idler shaft or gear.
11. Inspect bushings (10) in pump body (1), pump cover
(2), and pump idler gear (9) for excessive wear or
discoloration due to overheating or seizing. If
necessary, replace bushing with arbor press and
performed in paragraph 3-30 indicates
excessive bushing wear, replace drive
12. Inspect pressure regulator plunger (11) to see if it is
bent. Try plunger in pressure regulator bore in oil pump
body (1) to ensure that it does not bind. Inspect
plunger for scratches or scoring. Replace plunger if it is
bent, binds in the bore, or if scratches are present
which can be felt with a fingernail.
13. Inspect pressure regulator spring (12) for damaged or
broken coils. Replace spring if damaged.
14. Using valve spring tester, compress pressure regulator
spring (12) to a height of 1.820 inches (46.23 mm). The
force required to compress the spring to this height
must be 22 to 26 lbs (98 to 116 N). Replace spring if it
does not conform with this standard.