Daewoo Mega 250-V, Operation And Maintenance Manua

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K1000896E Operation and Maintenance Manual Inspection, Maintenance and Adjustment 4-19
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.
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 20 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.
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 24