Exhaust System: Service and Repair

Exhaust System

Special Service Tools






Wrench, HO2S

310-121 (LRT-19-014)

Removal
1 Disconnect the battery ground cable. For additional information, refer to Specifications Service and Repair
2
WARNING: Do not work on or under a vehicle supported only by a jack. Always support the vehicle on safety stands.
Raise and support the vehicle.
3 Remove the engine undershield. For additional information, refer to Engine Undershield Engine Undershield
4 Remove the transmission crossmember. For additional information, refer to Transmission Support Crossmember Service and Repair




5 Release the LH front HO2S wiring harness.
- Disconnect the electrical connector.




6 Release the RH front HO2S wiring harness.
- Disconnect the electrical connector.
7 Release the LH rear HO2S wiring harness.
- Disconnect the electrical connector.




8 Release the RH rear HO2S wiring harness.
- Disconnect the electrical connector.




9 Disconnect the LH catalytic converter from the exhaust manifold.
- Remove and discard the 2 bolts.





10 Disconnect the RH catalytic converter from the exhaust manifold.
- Remove and discard the 2 bolts.





11 With assistance, remove the exhaust system.
- Disconnect the 5 exhaust hangers.





12
NOTE:
Do not disassemble further if the component is removed for access only.
Using the special tool, remove the 4 HO2S from the catalytic converters.

Installation
1
CAUTION: Make sure the anti-seize compound does not contact the HO2S tip.
Using the special tool, install the HO2S to the catalytic converters and tighten to 45 Nm (33 lb.ft).
- Clean the components.
- Apply an anti-seize compound to the thread of the HO2S.
2 With assistance, install the exhaust system.
- Attach the exhaust hangers.
3 Position the RH catalytic converter to the exhaust manifold.
- Clean the components.
- Tighten the new bolts to 22 Nm (16 lb.ft).




4
CAUTION: Make sure there is a clearance (A) of 25 mm to 30 mm between the closest points of the LH catalytic converter and the front driveshaft.
Position the LH catalytic converter to the exhaust manifold.
- Clean the components.
- Tighten the new bolts to 22 Nm (16 lb.ft).
5
CAUTION: Make sure the H02S wiring harness is not twisted more than 180 degrees and is not in contact with either the exhaust or driveshaft.
Connect the HO2S electrical connectors.
- Attach the HO2S wiring harnesses.
6 Install the transmission crossmember. For additional information, refer to Transmission Support Crossmember Service and Repair
7 Install the engine undershield. For additional information, refer to Engine Undershield Engine Undershield
8 Connect the battery ground cable. For additional information, refer to Specifications Service and Repair