Exhaust System: Service and Repair

To neutralize exhaust system noise, the following steps must be taken:
1. Loosen muffler inlet pipe and resonators to manifolds, the fasteners at the flat flanges and the U-clamp at muffler inlet pipe.
2. Place a stand supporting muffler. Raise muffler to a height so that the system is parallel to the frame and the muffler pipe bracket is unloaded.
3. Tighten flat flanges.
4. Position muffler inlet pipe and resonators to manifolds and tighten. Make sure that catalyst heat shields do not contact frame rails.
5. Prior to tightening U-clamp on muffler inlet pipe and resonator, make sure that tail pipe over axle assembly is spaced evenly between upper rear suspension upper front arm and bushing and rear spring . Tighten U-clamp.
6. With complete exhaust system tight (and in cold condition), the rear hanger strap should be angling forward to allow the system to expand rearward when heated to normal running temperature.