An exhaust leak or noise on full-size trucks may be caused by an unseated pipe-to-pipe mid-joint connection. (Fig. 17)
A gap under the clamp edge is evidence the clamp was damaged (stretched) when installed and the clamp should be replaced.
To correct this condition, replace the band clamp and push the pipes together while tightening the clamp bolt. The pipe flares must be seated while tightening the clamp.
IMPORTANT: Anytime the band clamp is removed, it should be replaced with a new clamp. It may not maintain the proper clamp load when reused.
After the band clamp is installed, it does not need to be perpendicular to the pipe. It is acceptable to have a pipe-to-pipe or clamp angle. Confirm that the clamp edges (both sides and all the way around the clamp) are seated on the pipe. (Fig. 18)
Leave a comment