operators_manual

2. Slip the belt around the idler pulley
attached to the automatic
tensioner
.
3. Release the automatic tensioner.
4. Check the belt alignment on each
pulley. The belt must fall between
the flanges of each pulley.
Engine Fan
WARNING
DO NOT work on or near the fan with
the
engine running. Anyone near the
engine fan when it turns on could be
injured. If it is set at MANUAL, the fan
will turn on any time the ignition key
switch is turned to the ON position. In
AUTO, it could engage suddenly with-
out warning. Before turning on the igni-
tion or switching from AUTO to MAN-
UAL, be sure no workers are near the
fan. Failure to comply may result in
death or personal injury.
Follow these guidelines to check your
engine fan:
• With the engine shut off, check the
fan hub bearings for looseness,
loss of lubricant, and any abnormal
conditions (e.g. fan belt misaligned
or excessive wear/damage, etc.).
•
With the engine idling and the hood
open, stand at the front of the
vehicle. Listen for any noises
coming from the fan hub. Bearings
that have lost lubricant and are dry
will typically emit a squeal or a
growl when the engine is at
operating temperature and the fan
clutch is engaged. If noise is
detected, have the fan bearings
inspected by an authorized
dealership.
Engine Fan Blade
Verify that there is enough fan blade
clearance with the fan shroud. The
recommended distance around the fan
shroud 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 incorrectly placed.
• 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 yourself
up. This could loosen the connections
and open the system to unfiltered air
which could damage the engine.
MAINTENANCE - Engine Maintenance
218 Y53-6096-1C1 (09/20)
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