TM 5-3805-262-20
3-6. EXHAUST SYSTEM TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
EXCESSIVE EXHAUST NOISE
Step 1. Remove engine top hood (page 9-11).
Check muffler, pipe, and muffler adapter for cracks and holes.
a. If muffler, pipe, and muffler adapter are cracked or holes
seen, replace (page 4-66).
b. If muffler, pipe, and muffler adapter are okay, go to step
low.
a r e
2 be-
Step 2.
Squirt a small amount of oil on muffler adapter gasket area where it
contacts exhaust manifold. With engine idling, check if air bubbles
can be seen, indicating damaged gasket.
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