StediFlo
t
57:1 Pump
18
Part 1601882-01
E
2012 Nordson Corporation
Air Motor Troubleshooting
These troubleshooting procedures cover only problems with the air motor.
See Figure 7 for item numbers.
Problem
Possible Cause
Corrective Action
1. Air is leaking from the
control piston into the
mufflers.
Control piston (5) is worn.
Replace the control piston.
(Motor continues to run
but slows down.)
Lip seal (54) is worn.
Replace the lip seal.
O-ring (58) or O-ring (59) is worn.
Replace the O-rings.
Gasket (15) is defective.
Replace the gasket.
2. Air blows out of the
lower motor housing
(74) drain hole.
Guide bushing (46) is worn.
Replace the guide bushing.
3. Motor does not run,
air is leaking from the
control piston into the
mufflers.
Toggle (18) is no longer seated in
either the toggle bearing (19) or
the carrier (25).
Repair.
Connecting rod spring (62 or 65) is
broken.
Replace the spring(s).
4. Air motor fails to
perform as expected.
Insufficient air pressure or volume.
Check compressor output, increase
size of air line if necessary.
Muffler is clogged.
Replace the muffler(s).
