454 CID (7.4L) / 502 CID (8.2L)
SERVICE MANUAL NUMBER 23
Page 3A-51
90-861326--1 MARCH 1999
Oil Pump
72277
1
2
3
4
5
6
7
8
9
10
11
Oil Pump Assembly
1-Extension Shaft
2-Shaft Coupling
3-Pump Body
4-Drive Gear and Shaft
5-Idler Gear
6-Pickup Screen and Pipe
7-Pump Cover
8-Pressure Regulator Valve
9-Pressure Regulator Spring
10 - Retaining Pin
11 - Screws
The oil pump consists of two gears and a pressure regulator valve enclosed in a two-piece
housing. Oil pump is driven by distributor shaft which is driven by a helical gear on camshaft.
Removal
1. Remove oil pan as outlined.
2. Remove gasket carefully as the one-piece gasket for the oil pan may be reused if still
pliable and not cracked, torn, etc.
3. Remove baffle.
75496
a
b
c
a-Nuts (5)
b-Baffle
c-Oil Pump
4. Remove oil pump.
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