172—ENGINE
CHRYSLER SERVICE MANUAL
37.
REMOVAL AND INSTALLATION
OF OIL PAN
a. Removal
Drain oil and remove dip stock. Disconnect
crossover and "Y" pipe at exhaust manifolds
and at clamp to exhaust extension so that
crossover and "Y" pipe may be moved out of
way. Be sure the rest of exhaust system is suf-
ficiently supported. Disconnect steering link-
age at idler arm support bracket, and allow
linkage to settle away from bottom of pan.
Remove bolts that hold pan to cylinder block
and remove pan.
b.
Installation
Clean pan thoroughly and install new seals and
gaskets. End seals should be bottomed in their
grooves and retained by crimping. Ends of seals
should extend approximately Y
S2
inch higher
than the attaching face of oil pan to insure
proper sealing. Tighten bolts evenly to 15
foot-pounds torque. Install exhaust pipes and
connect steering linkage. Refill crankcase. See
Lubrication, Section XV.
38.
OIL PUMP
a. Removal
Remove oil pan, oil pump attaching bolts and
remove pump by pulling straight down.
b.
Disassembly-
Refer to Figure 55 and proceed as follows: Re-
move the cotter pin, holding oil strainer to
oil pump cover. Remove oil pump cover and
oil seal ring. Remove pump rotor and shaft,
and lift out pump rotor body. Remove oil pres-
sure relief valve plug, and lift out spring and
plunger.
c. Inspection and Repair
Wash all parts thoroughly. The mating face of
oil pump cover should be smooth. Replace cov-
er,
if it is scratched or grooved.
Lay a straightedge across cover surface (Fig.
56).
If a .0015 inch feeler gauge can be in-
serted between cover and straightedge, the
cover should be replaced.
If rotor body measures less than .998 inch
(Fig. 57) and diameter less than 2.244 inches,
replace rotor body.
DISTRIBUTOR LOWER DRIVE
SHAFT AND GEAR
OIL SEAL RING (SMALL)
PUMP BODY
RELIEF VALVE PLUNGER
-RELIEF VALVE SPRING
RELIEF VALVE PLUG
INNER ROTOR AND SHAFT
OIL STRAINER ASSEMBLY
COTTER PIN
' LOCK WASHER
COVER SCREW
51x926A
Fig.
55—Oil Pump (Disassembled View) (Typical)
If pump rotor measures less than .998 inch
(Fig. 58) a new pump rotor should be installed.
Slide rotor body and rotor into pump body and
place a straightedge across face (between bolt
holes),
as shown in Figure 59. If a feeler gauge
or more than .004 inch can be inserted be-
tween rotors and straightedge, replace pump
body.
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