Camshaft Bearing Removal And Installation; Crankshaft / Camshaft Sprocket Timing Mark Alignment - Jeep 200 Cherokee Service Manual

9 - 104 4.0L ENGINE
REMOVAL AND INSTALLATION (Continued)
Fig. 64 Crankshaft / Camshaft Sprocket Timing Mark
Alignment
1 – CAMSHAFT SPROCKET
2 – TIMING MARKS
3 – CRANKSHAFT SPROCKET
(11) Install the timing case cover with a replace-
ment oil seal (Fig. 65). Refer to Timing Case Cover
Installation.
(12) Install the vibration damper (Fig. 65).
Fig. 65 Timing Case Cover Components
1 – TIMING CASE COVER
2 – OIL SLINGER
3 – CRANKSHAFT OIL SEAL
4 – VIBRATION DAMPER PULLEY
(13) Install the hydraulic valve tappets.
(14) Install the cylinder head gasket with the
numbers facing up.
(15) Install the cylinder head and head bolts
(Refer to cylinder head R&I in this section for torque
values and tightening sequence).
(16) Install the push rods.
(17) Install the rocker arms and pivot and bridge
assemblies. Tighten each of the capscrews for each
bridge alternately, one turn at a time, to avoid dam-
aging the bridge (Refer to Rocker Arms and Push
Rods in this section).
(18) Install the engine cylinder head cover.
(19) Install the serpentine drive belt. (refer to
Group 7, Cooling System for the proper procedure).
NOTE: During installation, lubricate the hydraulic
valve tappets and all valve components with Mopar
Engine Oil Supplement, or equivalent. The Mopar
Engine Oil Supplement, or equivalent must remain
with the engine oil for at least 1609 km (1,000
miles). The oil supplement need not be drained until
the next scheduled oil change.
(20) Install the radiator, connect the hoses and fill
the cooling system to the specified level (refer to
Group 7, Cooling System for the proper procedure).
(21) Check the ignition timing and adjust as nec-
essary.
(22) Install the grille and bumper, if removed.
(23) Connect negative cable to battery.
CAMSHAFT BEARINGS
REMOVAL
The camshaft rotates within four steel-shelled, bab-
bitt-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 cam-
shaft. The camshaft bearings are pressure lubricated.
Camshaft end play is maintained by the thrust plate.
(1) Remove the camshaft. Refer to Camshaft in
this section for procedure.
NOTE: It is not advisable to attempt to replace cam-
shaft bearings unless special removal and installa-
tion tools are available, such as recommended tool
8544 Camshaft Bushing Remover Installer.
(2) Using Special tool, remove the camshaft bear-
ings.
INSTALLATION
(1) Inspect the camshaft bearing journals for
uneven wear pattern or finish.
(2) Inspect the camshaft lobes and distributor gear
for wear.
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