Oil Pump Removal; Disassembly - Chrysler 300M Service Manual

LH
OIL PRESSURE SWITCH (Continued)
Fig. 108 OIL PRESSURE SWITCH
1 - OIL PRESSURE SWITCH
2 - OIL COOLER FITTING
3 - ELECTRICAL CONNECTOR
OIL PUMP
REMOVAL
It is necessary to remove the oil pump body to ser-
vice the oil pump rotors.
The oil pump pressure relief valve can be serviced
by removing the oil pan. (Refer to 9 - ENGINE/LU-
BRICATION/OIL PRESSURE RELIEF VALVE -
REMOVAL)
(1) Drain the cooling system. (Refer to 7 - COOL-
ING - STANDARD PROCEDURE)
(2) Remove the radiator fan. (Refer to 7 - COOL-
ING/ENGINE/RADIATOR FAN - REMOVAL)
(3) Remove the accessory drive belts. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
(4) Remove the timing belt. (Refer to 9 - ENGINE/
VALVE TIMING/TIMING
SPROCKETS - REMOVAL)
(5) Remove the crankshaft sprocket. (Refer to 9 -
ENGINE/VALVE TIMING/TIMING
AND SPROCKETS - REMOVAL)
(6) Remove the oil pan. (Refer to 9 - ENGINE/LU-
BRICATION/OIL PAN - REMOVAL)
(7) Remove the oil pickup tube.
(8) Remove the oil pump fasteners. Remove pump
and gasket from engine (Fig. 109).
BELT/CHAIN AND
BELT/CHAIN
Fig. 109 OIL PUMP - REMOVAL/INSTALLATION
1 - OIL PUMP
2 - GASKET

DISASSEMBLY

(1) To remove the relief valve, proceed as follows:
(2) Remove cotter pin. Drill a 3.175 mm (1/8 inch.)
hole into the relief valve retainer cap and insert a
self-threading sheet metal screw into cap.
(3) Clamp screw into a vise and while supporting
oil pump body, remove cap by tapping oil pump body
using a soft hammer. Discard retainer cap and
remove spring and relief valve (Fig. 110).
Fig. 110 Oil Pressure Relief Valve
1 - RELIEF VALVE
2 - SPRING
3 - RETAINER CAP
4 - COTTER PIN
(4) Remove oil pump cover screws, and lift off
cover.
(5) Remove pump rotors.
(6) Wash all parts in a suitable solvent and inspect
carefully for damage or wear (Fig. 111).
ENGINE 9 - 67