Jeep Cherokee

 Service Manual

Engine » 4.0L engine » Removal and installation
Timing case cover oil seal

This procedure is done with the timing case cover installed.

REMOVAL

(1) Disconnect negative cable from battery.

(2) Remove the serpentine drive belt.

(3) Remove the vibration damper.

(4) Remove the radiator shroud.

(5) Carefully remove the oil seal. Make sure seal bore is clean.

INSTALLATION

(1) Position the replacement oil seal on Timing Case Cover Alignment and Seal Installation Tool 6139 with seal open end facing inward. Apply a light film of Perfect Seal, or equivalent, on the outside diameter of the seal. Lightly coat the crankshaft with engine oil.

(2) Position the tool and seal over the end of the crankshaft and insert a draw screw tool into Seal Installation Tool 6139 (Fig. 83). Tighten the nut against the tool until it contacts the cover.

Fig. 83 Timing Case Cover Oil Seal Installation

1 - SEAL INSTALLATION TOOL
2 - DRAW SCREW TOOL

(3) Remove the tools. Apply a light film of engine oil on the vibration damper hub contact surface of the seal.

(4) Apply Mopar Silicone Rubber Adhesive Sealant to the keyway in the crankshaft and insert the key.

With the key inserted in the keyway in the crankshaft, install the vibration damper, washer and bolt.

Lubricate and tighten the bolt to 108 N·m (80 ft. lbs.) torque.

(5) Install the serpentine belt and tighten to the specified tension (refer to Group 7, Cooling Systems for the proper specifications and procedures).

(6) Install the radiator shroud.

(7) Connect negative cable to battery.

Engine mounts-front

Engine mount-rear

Engine assembly

Intake and exhaust manifold

Exhaust manifold-4.0L engine

Cylinder head cover

Rocker arms and push rods

Valve springs and oil seals

Cylinder head

Valves and valve springs

Hydraulic tappets

Vibration damper

Timing case cover

Timing chain and sprockets

Camshaft

Camshaft bearings

Crankshaft main bearings

Oil pan

Pistons and connecting rods

Crankshaft oil seals-rear

Oil pump

Timing case cover oil seal