Chrysler RAM TRUCK 2500 1994 Service Manual page 833

(5) Position the oil pan over the dowels and onto
the gasket. The engine may have to be slightly raised
on 2WD vehicles.
(6) Install the oil pan bolts (Fig. 3). Tighten the 1/4
inch bolts to 11 N-m (96 in. lbs.) torque. Tighten the
stud bolts to 16 N-m (144 in. lbs.) torque. Tighten the
5/16 inch bolts to 16 N-m (144 in. lbs.) torque.
Fig. 3 Oil Pan Bolt Location
(7) Remove the dowels. Install the remaining 5/16
inch oil pan bolts. Tighten these bolts to 16 N-m (144
in. lbs.) torque.
(8) Install the drain plug. Tighten drain plug to 34
N-m (25 ft. lbs.) torque.
(9) Install the engine to transmission strut.
(10) Lower vehicle.
(11) Connect the negative cable to the battery.
(12) Fill crankcase with oil to proper level.
OIL PUMP
REMOVAL
(1) Remove the timing chain cover.
(2) Remove the relief valve plug, gasket, spring
and valve (Fig. 4). Discard the gasket.
PLUG TIMING
Fig. 4 Oil Pressure Relief Valve
(3) Remove oil pump cover (Fig. 5).
(4) Remove pump rotors (Fig. 5).
OUTER INNER
ROTOR ROTOR
TIMING CHAIN
COVER
J 9 4 0 9
.
7 1
Fig. 5 Oil Pump
CLEANING
Wash all parts i n a suitable solvent and inspect
carefully for damage or wear.
I N S P E C T I O N
Mating surface of the oil pump cover should be
smooth. Replace pump cover i f scratched or grooved.
Lay a straightedge across the pump cover surface
(Fig. 6). I f a 0.076 mm (0.003 inch) feeler gauge can
be inserted between cover and straightedge, cover
should be replaced.
>-68
Fig. 6 Checking Oil Pump Cover Flatness
Measure thickness (Figs. 7 and 8) and diameter of
rotors. I f either rotor thickness measures 18.92 mm