TM 9-2320-280-34
17-6. OIL PUMP REPAIR (3L80) (Cont'd)
c. Inspection
NOTE
For general inspection instructions, refer to para. 2-14.
1.
Inspect gear pockets (10), crescent (8), drive gear (5), driven gear (6), and pump body (7) for scoring,
galling, or damage. Replace oil pump if any parts are scored, galled, or damaged.
2.
Place drive gear (5) and driven gear (6) in pump body (7).
3.
Check pump body (7) to drive gear (5) face and driven gear (6) face clearance using a straight edge
and feeler gauge. Clearance should be 0.0008-0.0035 inch (0.02-0.09 mm). If clearance does not
meet specifications, replace oil pump.
4.
Inspect snapring (11), boost valve bushing (12), and boost valve (13) for damage. Replace all items
if one item is damaged.
5.
Inspect pressure regulator spring (14), spring retainer (15), spacer(s) (16), and regulator valve (17)
for damage. Replace any damaged items.
1
18.1
2
18
2.1
1
3
4
17
16
15
14
5
13
6
12
10.1
6
6.1
5
11
7
8
10
9
Change 2
17-17
