2002 JEEP GRAND CHEROKEE Workshop Manual

Page 1337 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual INTAKE/EXHAUST VALVES &
SEATS
DESCRIPTION
The valves are made of heat resistant steel and
have chrome plated stems to prevent scuffing. Each
valve is actuated by a roller rocker arm which pivots
on a

Page 1338 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual NOTE: All eight valve springs and valves are
removed in the same manner; this procedure only
covers one valve and valve spring.
(3) Using Special Tool C-3422±B or C-3422±C
Valve Spring Compressor an

Page 1339 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual ROCKER ARM / ADJUSTER
ASSEMBLY
DESCRIPTION
The rocker arms are steel stampings with an inte-
gral roller bearing. The rocker arms incorporate a 2.8
mm (0.11 inch) oil hole in the lash adjuster socket

Page 1340 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (5) Using special tool 8516 press downward on the
valve spring, install rocker arm (Fig. 28).
(6) Install the cylinder head cover (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATI

Page 1341 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual VISUAL TEST METHOD
With the engine cool, remove the coolant pressure
cap. Start the engine and allow it to warm up until
thermostat opens.
If a large combustion/compression pressure leak
exists, bubbl

Page 1342 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (19) Remove the retaining bolt and the camshaft
drive gear.
CAUTION: Do not allow the engine to rotate. severe
damage to the valve train can occur.
CAUTION: Do not overlook the four smaller bolts at
t

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JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual ²Step 2: Verify that bolts 1±10, all reached 27
N´m (20 ft. lbs.), by repeating step-1 without loosen-
ing the bolts. Tighten bolts 11 thru 14 to 14 N´m (10
ft. lbs.).
²Step 3: Tighten bolts 1±1

Page 1344 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (5) Position Special Tool 8350 timing chain wedge
between the timing chain strands. Tap the tool to
securely wedge the timing chain against the ten-
sioner arm and guide (Fig. 31).
(6) Remove the cams