MacDon M155 Operators Manual - Manual (Page 339)

MAINTENANCE AND SERVICING
The exhaust system requires no regular maintenance, but
it should be inspected periodically as follows:
1. Open the hood to its highest position. For instructions,
refer to 5.4.3 Opening Hood (Highest Position), page
267 .
2. Inspect the area around clamps (A) for breakage,
cracks and rust-through. In addition to excess noise,
a leaky exhaust system may allow exhaust gases to
escape to the cab.
3. Check tubing for dents or crushed areas. Dents or
crushed portions of any tubing create exhaust flow
restriction, and increase back pressure significantly.
Even relatively small dents will cause decreased fuel
economy and increased turbo wear.
If dents are
relatively large, increased bearing and cylinder wear
will occur due to increased exhaust temperature.
4. Make sure the exhaust system is secured to eliminate
vibration. The brackets (B) should fit securely to the
muffler (C), and to the engine.
IMPORTANT:
Do NOT change muffler type, piping sizes, or
exhaust configuration. See your Dealer for proper
replacement parts.
Figure 5.120: Exhaust System
A - Clamps B - Brackets C - Muffler
Belts
Tensioning Alternator/Fan Belt
The alternator, water pump, and fan belt are automatically tightened; manual adjustment is NOT required.
Replacing Fan Belt
DANGER
Stop engine and remove key from ignition before leaving operator's seat for any reason. A child or even a
pet could engage an idling machine.
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Revision A