Toyota
Jeep Cherokee
 Service Manual
Engine » 4.0L engine » Removal and installation
Timing chain and sprockets

REMOVAL

(1) Disconnect negative cable from battery.

(2) Remove the fan and shroud.

(3) Remove the serpentine drive belt.

(4) Remove the crankshaft vibration damper.

(5) Remove the timing case cover.

(6) Rotate crankshaft until the "0" timing mark is closest to and on the center line with camshaft sprocket timing mark (Fig. 61).

Fig. 61 Crankshaft-Camshaft Alignment
Fig. 61 Crankshaft-Camshaft Alignment

1 - CAMSHAFT SPROCKET
2 - TIMING MARKS
3 - CRANKSHAFT SPROCKET

(7) Remove the oil slinger from the crankshaft.

(8) Remove the camshaft sprocket bolt and washer (Fig. 62).

Fig. 62 Camshaft Sprocket and Thrust Plate
Fig. 62 Camshaft Sprocket and Thrust Plate

1 - CAMSHAFT
2 - CAMSHAFT SPROCKET W/INTEGRAL KEY
3 - BOLT & CUP WASHER
4 - THRUST PLATE

(9) Remove the crankshaft sprocket, camshaft sprocket and timing chain as an assembly.

(10) Installation of the timing chain with the timing marks on the crankshaft and camshaft sprockets properly aligned ensures correct valve timing. A worn or stretched timing chain will adversely affect valve timing. If the timing chain deflects more than 12.7 mm (1/2 inch) replace it.

INSTALLATION

Assemble the timing chain, crankshaft sprocket and camshaft sprocket with the timing marks aligned (Fig. 61).

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

With the key in the keyway on the crankshaft, install the assembly on the crankshaft and camshaft.

(2) Install the camshaft sprocket bolt and washer (Fig. 62). Tighten the bolt to 68 N·m (50 ft. lbs.) torque.

(3) To verify correct installation of the timing chain, rotate the crankshaft 2 revolutions. The camshaft and crankshaft sprocket timing mark should align (Fig. 61).

(4) Install the crankshaft oil slinger.

(5) Replace the oil seal in the timing case cover.

(6) Install the timing case cover and gasket.

(7) With the key installed in the crankshaft keyway, install the vibration damper, washer and bolt.

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

(8) Install the serpentine drive belt. (refer to Group 7, Cooling System for the proper procedure).

(9) Install the fan and hub assembly. Install the shroud.

(10) Connect negative cable to battery.

    More about «Removal and installation»:

    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

    Jeep Cherokee Service Manual / Engine / 4.0L engine / Removal and installation / Timing chain and sprockets

    Jeep Cherokee Service Manual

    Categories


    © 2017-2023 Copyright www.jcherokee.com