4-16 Inspection, Maintenance and Adjustment
022-00029AE Operation and Maintenance Manual
INSPECT ENGINE FAN BLADE
NOTE:
Manually rotate the crankshaft
by using a wrench on the
accessory drive pulley nut.
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.
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.
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 "OFF" position
and the controls are tagged.
Figure 21
Figure 22