Jeep 1987 Wrangler Workshop Manual page 386

ENGINES
4.2 LITER (258 CID) SIX-CYLINDER ENGINE
LUBRICATION SYSTEM - Oil Pimp
Installation
NOTE: To ensure self-priming of the oil pump,
fill the pump with petroleum jelly before installing
the oil pump cover. Do not use grease.
Install the oil pump with a replacement gasket.
Tighten the short screws with 14 N-m (10 ft-lbs)
torque and the long screws with 23 N-m
(17 ft-lbs) torque.
NOTE: Rotate the gears to ensure that a binding
condition does not exist before installing the oil
pump.
Install the oil pan with replacement gaskets and
seals. Refer to Oil Pan Installation for the
procedure. Fill the oil pan with replacement
engine oil to the specified level.
LUBRICATION SYSTEM - Oil Pump Overhaul
Refer to the MOT. 4.2L manual for the oil pump
overhaul procedure.
LUBRICATION SYSTEM - Oil Pressure Gauge
Refer to Chapter C - Electrical for operation,
diagnosis and replacement of the oil pressure
gauge.
PISTONS AND CONNECTING RODS
ASSEMBLY REPLACEMENT
NOTE: The following procedure is for servicing
the piston and connecting rod assemblies with
the engine installed.
PISTONS AND CONNECTING RODS
ASSEMBLY REMOVAL
Remove the cylinder head cover. Refer to Cylin-
der Head Cover Removal for the procedure.
Remove the capscrews (1), bridge (2) and pivot
(3) assemblies and rocker arms (4). Alternately
loosen the capscrews, one turn at a time, to
avoid damaging the bridge.
Remove the push rods (5).
86162
B-152