| RIB CHUNKING (One or more ribs has separated from belt body) |
- Foreign objects imbedded in pulley grooves.
- Installation damage
|
- Remove foreign objects from pulley grooves. Replace belt.
- Replace belt
|
| RIB OR BELT WEAR |
- Pulley misaligned
- Abrasive environment
- Rusted pulley(s)
- Sharp or jagged pulley groove tips
- Belt rubber deteriorated
|
- Align pulley(s)
- Clean pulley(s). Replace belt if necessary
- Clean rust from pulley(s)
- Replace pulley. Inspect belt.
- Replace belt
|
| BELT SLIPS |
- Belt slipping because of insufficient tension
- Belt or pulley exposed to substance that has reduced friction (belt dressing, oil, ethylene glycol)
- Driven component bearing failure (seizure)
- Belt glazed or hardened from heat and excessive slippage
|
- Inspect/Replace tensioner if necessary
- Replace belt and clean pulleys
- Replace faulty component or bearing
- Replace belt.
|
| LONGITUDAL BELT CRACKING |
- Belt has mistracked from pulley groove
- Pulley groove tip has worn away rubber to tensile member
|
- Replace belt
- Replace belt
|
| "GROOVE JUMPING" (Belt does not maintain correct position on pulley) |
- Incorrect belt tension
- Pulley(s) not within design tolerance
- Foreign object(s) in grooves
- Pulley misalignment
- Belt cordline is broken
|
- Inspect/Replace tensioner if necessary
- Replace pulley(s)
- Remove foreign objects from grooves
- Align component
- Replace belt
|
| BELT BROKEN (Note: Identify and correct problem before new belt is installed) |
- Incorrect belt tension
- Tensile member damaged during belt installation
- Severe misalignment
- Bracket, pulley, or bearing failure
|
- Replace Inspect/Replace tensioner if necessary
- Replace belt
- Align pulley(s)
- Replace defective component and belt
|
| NOISE (Objectionable squeal, squeak, or rumble is heard or felt while drive belt is in operation) |
- Incorrect belt tension
- Bearing noise
- Belt misalignment
- Belt to pulley mismatch
- Driven component induced vibration
|
- Inspect/Replace tensioner if necessary
- Locate and repair
- Align belt/pulley(s)
- Install correct belt
- Locate defective driven component and repair
|
| TENSION SHEETING FABRIC FAILURE (Woven fabric on outside, circumference of belt has cracked or separated from body of belt) |
- Tension sheeting contacting stationary object
- Excessive heat causing woven fabric to age
- Tension sheeting splice has fractured
|
- Correct rubbing condition
- Replace belt
- Replace belt
|
| CORD EDGE FAILURE (Tensile member exposed at edges of belt or separated from belt body) |
- Incorrect belt tension
- Belt contacting stationary object
- Pulley(s) out of tolerance
- Insufficient adhesion between tensile member and rubber matrix
|
- Inspect/Replace tensioner if necessary
- Replace belt
- Replace pulley
- Replace belt
|