Jeep 1987 Wrangler Workshop Manual page 385

ENGINES
4.2 LITER (258 CID) SIX-CYLINDER ENGINE
Install the seal in the recess of the rear main
bearing cap. Ensure that it is fully seated.
NOTE: Either one of two sealing methods may
be used. An RTV sealant such as AMC Gasket-
in-a-Tube, or equivalent, may be used instead of
a gasket. If a gasket is used, coat both sides with
a quick drying adhesive such as AMC Spray-a-
Gasket, or equivalent.
Apply engine oil to the oil pan contacting surface
of the front and rear oil pan seals.
NOTE: Tighten the 1/4-20 oil pan screws with
9 N-m (7 ft-lbs) torque and tighten the 5/16-18 oil
pan screws with 15 N-m (11 ft-lbs) torque.
Install the oil pan. Tighten the screws and the
drain plug securely.
Install the starter motor.
Install the flywheel/torque converter housing
access cover.
Raise the vehicle and remove the sill supports
and jack. Lower the vehicle.
WARNING: Use extreme caution when the
engine is operating. Do not stand in a direct line
with the fan. Do not put your hands near the
pulleys, belts or fan. Do not wear loose clothing.
Fill the oil pan with engine oil to the specified
level. Start the engine and inspect for leaks.
LUBRICATION SYSTEM - Oil Pump Removal
NOTE: A gear-type oil pump is mounted at the
underside of the cylinder block opposite the No.
4 main bearing.
NOTE: Oil pump removal or replacement will not
affect the distributor timing b e c a u s e the
distributor drive gear remains in mesh with the
camshaft gear.
Drain the engine oil.
Remove the oil pan. Refer to Oil Pan Removal
for the procedure.
Remove the oil pump retaining screws (1), oil
pump (2) and gasket (3).
CAUTION: Do not disturb the position of the oil
inlet tube and strainer assembly in the pump
body. If the tube is moved within the pump body,
a replacement tube and strainer assembly must
be installed to assure an airtight seal.
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