OP000471
Inspection, Maintenance and Adjustment
4-26
Check Engine Fan 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.
5.
Do not force the belts into the pulley grooves by prying
with a screwdriver or pry bar. This will damage the belt
side cords which will cause the belts to turn and result
in complete destruction of the belts in operation.
6.
Belts on new machines and replacement belts lose
their tension as they seat into the pulley grooves.
Check the tension of new belts at 50 hour intervals
until tension is stabilized and thereafter, every 250
hours. If the tension falls below the required minimum,
the belt slips damaging the belts and pulley grooves.
NOTE:
When operating in abrasive conditions, check
tension every 100 hours.
Figure 40
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.
Summary of Contents for DX35Z
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Page 6: ...Table of Contents K1025196E IV Index 8 1 ...
Page 60: ...OP000468 Safety 1 54 ...
Page 90: ...OP000469 Operating Controls 2 30 ...
Page 132: ...OP000470 Operation 3 42 ...