Exhaust System: Service and Repair

Removal and Installation

CAUTION:
^ Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat resistance, corrosion resistance, and shape.
^ Perform the operation with the exhaust system fully cooled down because the system will be hot just after the engine stops.
^ Be careful not to cut your hand on the heat insulator edge.








VQ35DE





VK45DE

REMOVAL
^ Disconnect each joint and mounting using power tool.
^ When removing main muffler, remove main muffler mounting bracket bolts.
^ Remove mounting bracket in steps order below.

1. Remove engine rear undercover.
2. Remove front cross bar. "FRONT SUSPENSION ASSEMBLY".
3. Remove mounting bracket.

INSTALLATION
Install in the reverse order of removal paying attention to the following.





^ Tighten main muffler mounting bracket bolts in numerical order shown in the figure.

CAUTION:
^ Always replace exhaust tube gaskets with new ones when reassembling.
^ If the heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the heat insulator, remove them.
^ When installing the heat insulator avoid large gaps or interference between the heat insulator and each exhaust pipe.
^ Remove deposits from the sealing surface of each connection. Connect them securely to avoid gas leakage.
^ Temporarily tighten mounting nuts on the exhaust manifold side and mounting bolts on the vehicle side. Check each part for unusual interference, and then tighten them to the specified torque.
^ When installing each mounting rubber, avoid twisting or unusual extension in up/down and rights left directions.

Inspection After Installation
Install in the reverse order of removal paying attention to the followings.
^ Check clearance between tail tube and bumper is even.
^ With the engine running, check exhaust tube joints for gas leakage and unusual noises.
^ Check to ensure that mounting brackets and mounting rubbers are installed properly and free from undue stress. Improper installation could result in excessive noise and vibration.