Komatsu PC27MR-3 Shop Manual page 39

SEN04066-02
4) Checking muffler and exhaust pipe for damage and looseness
1] Visually check the muffler, exhaust pipe and their mounting parts for a crack and damage.
If any part is damaged, replace it.
2] Check the mounting bolts and nuts of the muffler, exhaust pipe and their mounting parts for
looseness.
If any bolt or nut is loosened, retighten it.
5) Checking muffler function
Check the muffler for abnormal sound and sound different from that of a new muffler.
If any abnormal sound is heard, repair the muffler, referring to "Troubleshooting" and "Disassembly
and assembly".
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200 Foreword and general information
Precautions when carrying out operation
PC27MR-3, PC30MR-3, PC35MR-3