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VA
DRIVE BELTS (Continued)
CONDITION
BELT BROKEN
(Note: Identify and correct problem
before new belt is installed)
NOISE (Objectional squeal, squeek,
or rumble is heard or felt while drive
belt is in operation)
TENSION SHEETING FABRIC
FAILURE
(Woven fabric on outside,
circumference of belt has cracked or
separated from body of belt)
CORD EDGE FAILURE
(Tensile member exposed at edges
of belt or separated from belt body)
POSSIBLE CAUSES
1. Incorrect belt tension
2. Tensile member damaged during
belt installation
3. Severe misalignment
4. Bracket, pulley, or bearing failure
1. Incorrect belt tension
2. Bearing noise
3. Belt misalignment
4. Belt to pulley mismatch
5. Driven component induced
vibration
6. System resonent frequency
induced vibration
1. Tension sheeting contacting
stationary object
2. Excessive heat causing woven
fabric to age
3. Tension sheeting splice has
fractured
1. Incorrect belt tension
2. Belt contacting stationary object
3. Pulley(s) out of tolerance
4. Insufficient adhesion between
tensile member and rubber matrix
ACCESSORY DRIVE 7 - 7
CORRECTION
1. Replace Inspect/Replace
tensioner if necessary
2. Replace belt
3. Align pulley(s)
4. Replace defective component
and belt
1. Inspect/Replace tensioner if
necessary
2. Locate and repair
3. Align belt/pulley(s)
4. Install correct belt
5. Locate defective driven
component and repair
6. Vary belt tension within
specifications
1. Correct rubbing condition
2. Replace belt
3. Replace belt
1. Inspect/Replace tensioner if
necessary
2. Replace belt
3. Replace pulley
4. Replace belt
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