2003 JEEP GRAND CHEROKEE Workshop Manual

Page 1401 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual CATALYTIC CONVERTER - 4.0L
DESCRIPTION - CATALYTIC CONVERTER 4.0L
ENGINE
WARNING: THE NORMAL OPERATING TEMPERA-
TURE OF THE EXHAUST SYSTEM IS VERY HIGH.
THEREFORE, NEVER WORK AROUND OR ATTEMPT
TO SERV

Page 1402 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (1) Raise and support the vehicle.
(2) Saturate the bolts and nuts with heat valve
lubricant. Allow 5 minutes for penetration.
(3) Remove nuts from the catalytic converter and
exhaust pipe flange conn

Page 1403 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual CATALYTIC CONVERTER - 4.7L
DESCRIPTION - CATALYTIC CONVERTER
WARNING: THE NORMAL OPERATING TEMPERA-
TURE OF THE EXHAUST SYSTEM IS VERY HIGH.
THEREFORE, NEVER WORK AROUND OR ATTEMPT
TO SERVICE ANY PART

Page 1404 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (1) Raise and support the vehicle.
(2) Saturate the bolts and nuts with heat valve
lubricant. Allow 5 minutes for penetration.
(3) Remove nuts from the catalytic converter and
exhaust pipe flange conn

Page 1405 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual EXHAUST PIPE - 4.0L
REMOVAL
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
WARNING: THE NORMAL OPERATING TEMPERA-
TURE OF THE EXHAUST SY

Page 1406 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual NOTE: When servicing the exhaust system, replace
the factory installed uni-clamp with standard u-bolt
clamps.
(2) Position the catalytic converter onto the
exhaust pipe flange connection. Tighten reta

Page 1407 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual EXHAUST PIPE - 4.7L
REMOVAL
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
WARNING: THE NORMAL OPERATING TEMPERA-
TURE OF THE EXHAUST SY

Page 1408 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual NOTE: When servicing the exhaust system, replace
the factory installed uni-clamp with standard u-bolt
clamps.
(2) Position the catalytic converter onto the
exhaust pipe flange connection. Tighten reta