TM 5-4320-218-15
1
Nut
6
Pin
11
Relief valve spring 16 Screen
2
Gear
7
Cover gasket
12
Lockwasher
17 Driver gear
3
Body
8
Cover
13
Screw
18 Driven gear
4
Woodruff key
9
Cotter pin
14
Screw
19 Stub shaft
5
Drive shaft
10
Steel ball
15
Screw
Figure 29. Oil pump, exploded view.
e. Reassembly.
f. Installation.
(1) Insert the assembled drive shaft (5)
(1) Install the oil pump in the crankcase
into the pump body (3). Install the
with the screen facing toward the bot-
idler gear (18) on the shaft (19).
tom of the engine. Secure with the
(2) Position the gasket (7) and cover (8)
setscrew and pipe plug,
on the pump body; secure the cover
with the lockwashers (12) and ma-
(2) Install the gear (2) and secure with
chine screws (13 and 15).
the nut (1).
(3) Lubricate and insert the check ball
(10) and valve spring (11) into the
(3) Apply a thin coat of grease to a new
valve bore of the cover. Compress the
cover plate gasket (15, fig. 28) and
spring and install the cotter pin (9).
position the gear cover (17) on the
(4) Position the screen (16) on the cover,
crankcase; secure with the cap screws
and secure with a machine screw (14)
(18) and lockwashers (9). Tighten
and lockwasher (12).
to within 6-9 foot-pounds torque.
(5) Install the woodruff key (4) in the
oil-pump shaft.
(4) Install the oil seal (19.
