2002 JEEP GRAND CHEROKEE Time

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Page 1282 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove the spark plugs (Refer to 8 - ELEC-
TRICAL/IGNITION CONTROL/SPARK PLUG -
REMOVAL).
(3) Raise the vehicle.
(4) Remove the oil pan (Refer t

Page 1286 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual HYDRAULIC LIFTERS
DESCRIPTION
Valve lash is controlled by hydraulic tappets
located inside the cylinder block, in tappet bores
above the camshaft.
REMOVAL
NOTE: Retain all the components in the same o

Page 1287 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual It is not necessary to charge the tappets with
engine oil. They will charge themselves within a very
short period of engine operation.
(1) Dip each tappet in MopartEngine Oil Supple-
ment, or equivale

Page 1288 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual PISTON SIZE CHART
CYLINDER BORE SIZE PISTON LETTER SIZE
98.438 - 98.448 mm
(3.8755 - 3.8759 in.)A
98.448 - 98.458 mm
(3.8759 - 3.8763 in.)B
98.458 - 98.468 mm
(3.8763 - 3.8767 in.)C
98.468 - 98.478 mm

Page 1289 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (11) Lower the vehicle until it is about 2 feet from
the floor.
CAUTION: Ensure that the connecting rod bolts DO
NOT scratch the crankshaft journals or cylinder
walls. Short pieces of rubber hose, sli

Page 1294 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual crankshaft is drilled internally to pass oil from the
main bearing journals (except number 4 main bear-
ing journal) to the connecting rod journals. Each con-
necting rod bearing cap has a small squir

Page 1296 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (5) If the leak is not detected, very slowly turn the
crankshaft and watch for leakage. If a leak is
detected between the crankshaft and seal while
slowly turning the crankshaft, it is possible the
cr

Page 1300 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual INSTALLATION
A gear-type oil pump is mounted at the underside
of the cylinder block opposite the No.4 main bearing.
(1) Install the oil pump on the cylinder block using
a replacement gasket. Tighten t