Peterbilt 325 2017, Operator'S Manual

Page: 314 / 392

ENGINE
Fan Drive and Blade
WARNING!
Do not work on the fan with the en-
gine running. The engine fan can
engage at any time without warning.
Before turning on the ignition be sure
that no one is near the fan. Failure
to comply may result in death or per-
sonal injury.
Fan Blade Clearance: Around the fan
shroud, the recommended distance
is 1 in. (25 mm) from front edge of
any fan blade-to-radiator side member.
Minimum clearance is 3/4 in. (19 mm).
•
Rear edge of any blade must be
no closer than 3/8 in. (9 mm) to
the nearest engine component. If
this cannot be obtained, the fan
spacer or fan is not correct.
•
The leading edge of any fan blade
must be 1 in. (25 mm) from the
inside edge of the shroud.
Air Intake System
Engine heat, vibration, and age
combine to loosen air intake
connections and cause cracks in
the tubing and elbows. Leaks in the
intake system allow abrasive dust to
enter the engine and quickly cause
expensive damage. During your daily
walk-around inspection, carefully
check all tubing, elbows, clamps,
supports and fasteners for condition
and tightness.
•
Check the Charge-Air-Cooler for
air leaks annually. The air leaks
can be caused by cracked tubes
or header. For service see your
authorized dealer.
CAUTION
Do not use air intake pipes and con-
nections as a step or to pull your-
self up. This could loosen the con-
nections and open the system to un-
filtered air which could damage the
engine.
5-104
Y53-6060-1C1 (03/17)
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