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BH40/60 Owners Manual
Troubleshooting - Belt
Symptom
Diagnosis
Possible Remedy
Unusual noise
Misaligned drive
Too low or high belt tension
Backside idler
Worn sprocket
Bent guide fl ange
Belt speed too high
Incorrect belt profi le for the sprocket (i.e., GT® etc.)
Subminimal diameter
Excess load
Correct alignment
Adjust tension to recommended value
Use inside idler
Replace sprocket
Replace sprocket/fl ange
Redesign drive
Use proper Gates PowerGrip® GT®3 belt/sprocket
Redesign drive using larger diameters
Redesign drive for increased capacity
Tension loss
Weak support structure
Excessive sprocket wear
Fixed (nonadjustable) centers
Excessive debris
Excessive load
Subminimal diameter
Belt, sprockets or shafts running too hot
Unusual belt degradation, such as softening or melting
Reinforce the structure
Use alternate sprocket material
Use inside idler for belt adjustment
Protect drive
Redesign drive for increased capacity
Redesign drive using larger diameters
Check for conductive heat transfer from prime mover
Reduce ambient drive temperature to 180°F maximum
Belt tracking
Belt running partly off unfl anged sprocket Centers exceed 8 times small sprocket diameter and
the large sprocket is not fl anged.
Excessive belt edge wear
Correct alignment
Correct parallel alignment to set belt to track on both sprockets
Correct alignment
Flange failure
Belt forcing fl anges off
Correct alignment or properly secure fl ange to sprocket
