Jeep Grand Cherokee WK. Manual — part 1185
8. Starting at the outside working inward, loosen the
camshaft bearing cap retaining bolts 1/2 turn at a
time. Repeat until all load is off the bearing caps.
CAUTION: DO NOT STAMP OR STRIKE THE CAM-
SHAFT BEARING CAPS. SEVERE DAMAGE WILL
OCCUR TO THE BEARING CAPS.
NOTE: When the camshaft is removed the rocker
arms may slide downward, mark the rocker arms
before removing camshaft.
9. Remove the camshaft bearing caps and the
camshaft.
INSTALLATION
1. Lubricate camshaft journals with clean engine oil.
NOTE: Position the left side camshaft so that the
camshaft sprocket dowel is near the 1 o’clock
position, This will place the camshaft at the neu-
tral position easing the installation of the camshaft
bearing caps.
2. Position the camshaft into the cylinder head.
3. Install the camshaft bearing caps, hand tighten the
retaining bolts.
4. Working in
1
⁄
2
turn increments, tighten the bearing
cap retaining bolts starting with the middle cap
working outward.
5. Torque the camshaft bearing cap retaining bolts to
11 N·m (100 in. lbs.).
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ENGINE - 4.7L SERVICE INFORMATION
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6. Position the camshaft drive gear into the timing chain aligning the V8 mark between the two marked chain links
(Two links marked during removal) (1).
NOTE: When gripping the camshaft, place the pli-
ers on the tube portion of the camshaft only. Do
not grip the lobes or the sprocket areas.
7. Using the adjustable pliers (1), rotate the camshaft
until the camshaft sprocket dowel (2) is aligned
with the slot in the camshaft sprocket. Install the
sprocket onto the camshaft.
CAUTION:
Remove
excess
oil
from
camshaft
sprocket bolt. Failure to do so can cause bolt
over-torque resulting in bolt failure.
8. Remove excess oil from bolt, then install the cam-
shaft sprocket retaining bolt and hand tighten.
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ENGINE - 4.7L SERVICE INFORMATION
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9. Remove Special Tool 8350 timing chain wedge (4).
10. Using Special Tool 6958 spanner wrench (4)with
adapter pins 8346, torque the camshaft sprocket
retaining bolt (2) to 122 N·m (90 ft. lbs.).
11. Install the cylinder head cover (1).
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ENGINE - 4.7L SERVICE INFORMATION
WK
COVER - CYLINDER HEAD - LEFT
DESCRIPTION
The cylinder head covers are made of injection molded thermo-set plastic, and are not interchangeable from side-
to-side. It is imperative that nothing rest on the cylinder head covers. Prolonged contact with other items may wear
a hole in the cylinder head cover.
REMOVAL - LEFT SIDE
1. Disconnect negative cable from battery.
2. Remove the resonator assemble and air inlet hose.
3. Disconnect injector connectors and un-clip the injector harness.
4. Route injector harness in front of cylinder head cover.
5. Disconnect the left side breather tube and remove the breather tube.
6. Remove the cylinder head cover mounting bolts.
7. Remove cylinder head cover and gasket.
NOTE: The gasket may be used again, provided no cuts, tears, or deformation has occurred.
CLEANING
Clean cylinder head cover gasket surface.
Clean head rail, if necessary.
INSTALLATION - LEFT SIDE
CAUTION: Do not use harsh cleaners to clean the
cylinder head covers. Severe damage to covers
may occur.
1. Clean cylinder head cover and both sealing sur-
faces. Inspect and replace gasket as necessary.
2. Install cylinder head cover and hand start all fas-
teners. Verify that all studs are in the correct loca-
tion shown in.
3. Tighten cylinder head cover bolts (1) and double
ended studs to 12 N·m (105 in. lbs.).
4. Install left side breather and connect breather tube.
5. Connect injector electrical connectors and injector
harness retaining clips.
6. Install the resonator and air inlet hose.
7. Connect negative cable to battery.
VALVES & SEATS - INTAKE/EXHAUST
DESCRIPTION
The valves are made of heat resistant steel and have chrome plated stems to prevent scuffing. Each valve is actu-
ated by a roller rocker arm which pivots on a stationary lash adjuster. All valves use three bead lock keepers to
retain the springs and promote valve rotation.
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ENGINE - 4.7L SERVICE INFORMATION
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