PROBLEM PROBABLE CAUSE
SOLUTION
TROUBLE SHOOTING GUIDES
VARIABLE SPEED DRIVES
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Different brand name belts Replace with a set of Machine Matched Belts
used on same drive
Driver and driven shaft shifted Realign drive
Worn sheaves Replace sheaves
Belts Mismatched Belts improperly tensioned, Replace belts and tension drive with slack of
After Service causing more stretch of some each belt on the same side of the drive
belts than others
Old belts and new belts used Replace with new belts
together on the same drive
Different brand name belts Replace with a set of Machine Matched Belts.
used on same drive
Driver and driven shafts Realign drive
shifted from parallel
Belt cord section damaged Replace belts and install properly
during installation
Drive Fails to Adjust Fretting corrosion (drive Sheave must be disassembled, cleaned and
allowed to operate at one lubricated, then reassembled.
speed over a period of time).
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