MAINTENANCE AND SERVICING
Form 169552 / 169554 / 169555
142
Revision A
7.8.9 EXHAUST SYSTEM
CAUTION
To avoid burns, do not touch muffler when
engine is running, or before allowing
sufficient cooling time after shut-down
The exhaust system requires no regular
maintenance, but it should be inspected
periodically as follows:
a. Open engine compartment hood to highest
position. See Section 7.4 ENGINE
COMPARTMENT HOOD.
b. 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.
c. 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.
d. The exhaust system should be secured to
eliminate vibration. The brackets (B) should fit
securely to the muffler (C), and to the engine.
e. Do not change muffler type, piping sizes or
exhaust configuration as these have all been
selected for very specific, technical reasons by
the Engineer. See your Dealer for proper
replacement parts.
C
B
A