TM 9-2320-272-24-4
5-11. ENGINE OIL PUMP REPAIR (Contd)
b. Cleaning and Inspection
WARNING
Drycleaning solvent is flammable and toxic. Do not use near
l
open flame and always have a fire extinguisher nearby when
solvents are used. Use only in well-ventilated places, wear
protective clothing, and dispose of cleaning rags in approved
container. Failure to do this may result in injury or death to
personnel and/or damage to equipment.
l Eyeshields must be worn when cleaning with compressed air.
Compressed air source will not exceed 30 psi (207 kPa). Failure
to do so may result in injury to personnel.
Wipe pump body (2) clean with drycleaning solvent.
1.
Blow out pump body (2) oil passages with compressed air.
2.
Inspect pump body (2) for breaks and cracks. Replace if broken or cracked.
3.
Check inside bore diameter of front and rear driveshaft bushings (1). Replace front and rear drive
4.
shaft bushings (1) if inside diameter exceeds 0.6185 in. (15.710 mm).
Wipe filter head (5) clean with drycleaning solvent.
5.
Blow out filter head (5) oil passages with compressed air.
6.
Inspect filter head (5) for breaks and cracks. Replace filter head (5) if broken or cracked.
7.
Check inside diameter of filter head bushing (4) for wear with dial bore gauge. Replace bushing (4) if
8.
inner diameter exceeds 0.6185 in. (15.710 mm).
Wipe inner body (3) clean with drycleaning solvent.
9.
Blow out inner body (3) oil passages with compressed air.
10.
Inspect inner body (3) for breaks and cracks. Replace inner body (3) if broken or cracked.
11.
Clean drive gear (11), two driven gears (9), and two idler gears (8) with drycleaning solvent, and
12.
inspect for cracked, chipped, or broken teeth. Replace gears if gears (11), (8), and (9) teeth are
cracked, chipped, or broken. Replace gears (11), (8), and (9) if gear teeth show pitting over more
than 1/4 width of active tooth area.
Clean two idler gears (8) and four bushings (10) with drycleaning solvent.
13.
Check inside diameter of two idler gears (8) and four bushings (10) with bore gauge. Replace idler
14.
gears (8) and bushings (10) if inner diameter exceeds 0.6185 in. (15.71 mm).
Inspect pressure regulator plunger (6) to ensure it does not bind in bore (7) of oil pump body (2).
15.
Replace pressure regulator plunger (6) if bent or binds.
Clean idler shaft (12) and driveshaft (13) with drycleaning solvent.
16.
Inspect idler shaft (12) and driveshaft (13) for breaks, cracks, and galling. Replace if broken,
17.
cracked, or galled.
Check idler shaft (12) and driveshaft (13) outside diameters using dial snap gauge. Replace shafts (12)
18.
and (13) if outside diameters are less than 0.6145 in. (15.608 mm).
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