2002 JEEP GRAND CHEROKEE engine

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Page 1330 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual INSPECTION
(1) Inspect the cylinder head for out-of-flatness,
using a straightedge and a feeler gauge. If tolerances
exceed 0.0508 mm (0.002 in.) replace the cylinder
head.
(2) Inspect the valve seats

Page 1331 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (3) Position the cylinder head onto the cylinder
block. Make sure the cylinder head seats fully over
the locating dowels.
NOTE: The four smaller cylinder head mounting
bolts require sealant to be adde

Page 1332 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual REMOVAL
CAUTION: When the timing chain is removed and
the cylinder heads are still installed, DO NOT force-
fully rotate the camshafts or crankshaft indepen-
dently of each other. Severe valve and/or

Page 1333 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (7) Using the pliers, gently allow the camshaft to
rotate 15É clockwise until the camshaft is in the neu-
tral position (no valve load).
(8) Starting at the outside working inward, loosen
the camshaf

Page 1334 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual NOTE: When gripping the camshaft, place the pliers
on the tube portion of the camshaft only. Do not
grip the lobes or the sprocket areas.
(7) Using the adjustable pliers, rotate the cam-
shaft until t

Page 1335 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual Fig. 20 SPECIAL TOOL 8350
1 - LEFT CYLINDER HEAD
2 - RIGHT CYLINDER HEAD3 - SPECIAL TOOL 8350 WEDGE
4 - SPECIAL TOOL 8350 WEDGE
9 - 92 ENGINE - 4.7LWJ
CAMSHAFT(S) - LEFT (Continued)

Page 1336 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual CYLINDER HEAD COVER(S) -
LEFT
DESCRIPTION
The cylinder head covers are made of die cast mag-
nesium, and are not interchangeable from side-to-
side. It is imperative that nothing rest on the
cylinder

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