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TM 9-4110-257-14
5-43. ENGINE OIL PUMP INSPECTION AND REPLACEMENT. - Continued
b. Inspection.
(1) Check rotor (5) and (6) wear by measuring them and checking against the following dimensions. Replace rotor
if not between these dimensions.
A
1.167 in. and 1.172 in. (29.65 mm and 29.77 mm)
B
1.592 in. and 1.597 in. (40.45 mm and 40.576 mm)
C
0.704 in. and 0.706 in. (17.89 mm and 17.94 mm)
NOTE
The rotor must be within dimensions before checking cover wear.
(2) Check cover (3) wear by placing rotor (6) inside cover. Be sure o-ring (4) is not installed in cover and measure the
distance between rotor surface (8) and cover edge (9). The dimension should be between 0.010 in. and 0.023 in. (0.27
mm and 0.60 mm). Replace the cover if not between these dimensions.
c. Installation.
(1) Install stud (7) if removed.
(2) Install rotor (5) with the bevel facing out.
(3) Install rotor (6) with bevel facing out.
(4) Install new o-ring (4) into cover (3).
(5) Install cover (3), two screws (2), and nut (1). Torque screws and nut to between 65 ft lb and 80 ft lb (88 Nm
and 109 Nm).
NOTE
FOLLOW-ON MAINTENANCE:
Close left side condenser door.
5-100
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