Grand Cherokee 2WD L6-4.0L VIN S (1997)
Exhaust Pipe: Service and Repair
Exhaust Pipe Replacement
WARNING: IF TORCHES ARE USED WHEN WORKING ON THE EXHAUST SYSTEM, DO NOT ALLOW THE FLAME NEAR THE
FUEL LINES.
REMOVAL
1. Raise and support the vehicle.
2. Saturate the bolts and nuts with heat valve lubricant. Allow 5 minutes for penetration.
3. Remove the oxygen sensor from the exhaust pipe.
4. Disconnect the exhaust pipe from the engine exhaust manifold. Discard the exhaust manifold seal.
a. Heat the exhaust pipe and catalytic converter connection with an torch until the metal becomes cherry red.
b. While the metal is still cherry red, twist the exhaust pipe back and forth to separate it from the catalytic converter.
5. Remove the exhaust clamp from the exhaust pipe and catalytic converter connection. Disconnect the exhaust pipe from the catalytic converter. If
needed:
6. Disconnect the exhaust pipe hanger from the rear mount bracket insulator.
7. Remove the exhaust pipe.
INSTALLATION
1. Position the exhaust pipe onto the catalytic converter.
2. Connect the exhaust pipe hanger to the rear mount bracket insulator.
3. Install a new seal between the exhaust pipe and the engine exhaust manifold. Connect the exhaust pipe to the engine exhaust manifold. Tighten the
nuts to 31 Nm (23 ft. lbs.) torque.
4. Position the exhaust clamp over the exhaust pipe/catalytic converter connection. Tighten the nuts to 61 Nm (45 ft. lbs.) torque.
