15
Troubleshooting
UOW-T60
TROUBLE
CAUSE
SOLUTION
Tool operates intermittently
One or more of the shoulders
on the pilot pin is rounded
Replace pilot pin
Tool shuts off as soon as it is
started, or tool shuts off but
will not restart
Spring under pilot pin has lost
tension; notch pin is rounded.
Replace notch pin, band and/or
pilot pin. Replace spring
Band spring is stretched out of
shape.
The shoulders on pilot pin are
rounded
Loss of RPM
Exhaust filter is dirty causing
back pressure
Replace filter
Tool runs all the time
Value rod is stuck down
Disassemble clean and
reassemble
Air motor runs but socket does
not work
Broken gear in front head
Disassemble front head;
inspect and replace broken
parts
Low torque
Worn cam or worn air motor
Replace cam or rebuild air
motor
Socket does not stop in reverse
Broken checker spring
Replace checker spring
UOW-11
TROUBLE
CAUSE
SOLUTION
Loss of RPMs
Exhaust filter is dirty causing
back pressure
Replace filter
Tool runs all the time
Value rod is stock down
Disassemble, clean, and
reassemble
Air motor runs but socket does
not turn
Broken gear in front head
Disassemble front head;
inspect and replace broken
parts
Low torque
Worn air motor
Rebuild air motor
Socket does not stop in reverse
Broken checker spring
Replace checker spring
Recommended Preventative Maintenance:
Clean and inspect the tool every six months or 250,000 cycles.
