Jeep Cherokee

 Service Manual

Engine » 2.5L engine » Removal and installation
Camshaft bearings

The camshaft rotates within four steel-shelled, babbitt-lined bearings that are pressed into the cylinder block and then line reamed. The camshaft bearing bores and bearing diameters are not the same size. They are stepped down in 0.254 mm (0.010 inch) increments from the front bearing (largest) to the rear bearing (smallest). This permits easier removal and installation of the camshaft. The camshaft bearings are pressure lubricated.

NOTE: It is not advisable to attempt to replace camshaft bearings unless special removal and installation tools are available, such as recommended tool 8544 Camshaft Bushing Remover Installer.

Camshaft end play is maintained by the load placed on the camshaft by the oil pump and distributor drive gear. The helical cut of the gear holds the camshaft sprocket thrust face against the cylinder block face.

Engine mounts-front

Engine mount-rear

Engine

Intake manifold

Exhaust manifold

Cylinder head cover

Rocker arms and push rods

Valve spring and seal

Cylinder head

Cylinder head

Hydraulic tappets

Vibration damper

Timing case cover oil seal

Timing case cover

Timing chain and sprockets

Camshaft

Camshaft pin replacement

Camshaft bearings

Crankshaft main bearings

Oil pan

Oil pump

Piston and connecting rod

Rear main oil seal