OP001015
4-29
Inspection, Maintenance and Adjustment
Inspect Cooling Fan Blade
1.
An inspection of the cooling fan is required daily. Check for
cracks, loose rivets, bent or loose blades, and for contact
between the blade tips and the fan shroud. Check the fan
to make sure it is securely mounted. Tighten the bolts if
necessary. Replace any fan that is damage.
Check Engine Drive Belt Wear
1.
Replace badly worn, greasy or severely cracked belts
immediately. These conditions prevent proper belt
function. Visually inspect the belt. Check the belt for
intersecting cracks. Transverse (across the belt width)
cracks are acceptable. Longitudinal (direction of belt
length) cracks that intersect with transverse cracks are not
acceptable. Replace the belt if it is frayed or has pieces of
material missing.
2.
Before installing new belts, make sure all pulley grooves
are clean and not worn. Replace pulley, if damaged, or if
the grooves are worn.
3.
All pulley support bearings, shafts, and brackets must be in
working order.
4.
When replacing belts and pulleys, pulley alignment must
be checked with belts tensioned and brackets securely
clamped. A misalignment that can be detected by the
naked eye is detrimental to belt performance.
Figure 29
WARNING
Personal injury can result from a fan blade failure. Never
pull or pry on the fan. This can damage the fan blade(s) and
cause fan failure.
Figure 30
WARNING
Keep clear of engine fan and fan drive belts when the
engine is running. Rotating fan and belt contact can cause
injury.
WARNING
When checking, adjusting or replacing drive belts, care
must be taken to prevent accidental cranking of the engine.
Be sure the starter switch is in the "O" (OFF) position and
the controls are tagged.
Summary of Contents for DL220
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