1
Bolt, hex hd, 5/16-18 x 7 (8 req)
14
Drive gear
2
Lockwasher, 5/16 (8 req)
16
Taper pin, No. 2 x 1 L
3
Plain washer, 5/16 (2 req)
16
Connector, 5/8 x 1/2 MPT (2 req)
4
Suction line connection
17
Tube assembly
5
Dowel pin (2 req)
18
Idler shaft
6
Connection gasket
19
Woodruff key, No. 5
7
Oil pump cover
20
Idler gear
8
Snap ring
21
Connector, 5/16 x 1/8 MPT
9
Pump gear
22
Tube assembly
10
Drive shaft
23
Elbow, 90'
11
Bolt, hex hd, 7/16-14 x 3/4 (2 req)
24
Reducing bushing, 3/8 x 1/8
12
Lockwasher, 7/16 (2 req)
25
Pressure relief plunger
13
Oil pump body
26
Pressure relief spring
12
Lockwasher, 7/16 (2 req)
27
Cotter pin, 1/8 x 3
13
Oil pump body
28
Intake screen
Figure 100. -- Continued.
(5) Disconnect the tube assembly (22) from the elbow (23) and the connector (21). The connector screws into
a reducing bushing (24) and the elbow screws into the oil pan filter connection.
(6) Remove the two hex head bolts (11) and lockwashers (12) that attach the oil pump assembly to its mounting
boss, and carefully lower the pump down out of the upper oil pan.
b. Oil Pump Disassembly (fig. 100).
(1) Unscrew the reducing bushing (24) from the oil pump cover (7) and remove the pressure relief plunger (25)
and spring (26).
(2) Support the hub of the drive gear (14) to prevent damage to the gear or shaft (10) while driving out the taper
pin (15). Remove the gear from the shaft.
(3) Remove the four hex head bolts (1) and lockwashers (2) and separate the pump cover (7) from the pump
body (13). Lift the pump gear (9) and shaft (10) and the idler gear (20) from the pump body. The pump
gear need not be pressed from its shaft except for replacement purposes.
c. Cleaning and Inspection.
(1) Clean all parts thoroughly with cleaning solvent and dry with compressed air.
(2) Inspect all gears for chipped or broken teeth.. Damaged gears must be replaced. If the pump gear or idler
gear is damaged, replace both gears.
(3) Examine the inside of the pump housing for signs of scoring. Also make certain that the plunger (25, fig. 100)
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