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