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Service
Flushing the Air Motor
WARNING
FIRE AND EXPLOSION HAZARD
Do not use kerosene or other flammable
solvents to flush the air motor. Flushing
with flammable solvents could cause fire or
explosion and result in serious injury or property
damage.
WARNING
HAZARDOUS VAPORS
Hazardous fluids or toxic fumes can
cause serious injury or death if splashed
in the eyes or on the skin, swallowed, or
inhaled. When flushing the air motor, keep your
face away from the exhaust port, and wear the
appropriate protective clothing, gloves, eyewear,
and respirator.
If the air motor (1) is sluggish or inefficient, follow this
procedure in a well ventilated area.
1. Disconnect the air line and muffler (22). See the
Parts Drawing on page 14.
2. Add several teaspoons of non-flammable solvent,
or spray the solvent directly into the male quick-
disconnect coupler (24).
NOTE: The recommended solvent for air motors
and lubricated pumps is Gastr Flushing Solvent
(Part No. AH255 or AH255A) or Penetone Inhibi-
solr Safety Solvent.
3. Reconnect the air line, and slowly increase the air
pressure until there is no trace of solvent in the
exhaust air.
4. Reconnect the muffler (22).
5. Re-lubricate the motor with a squirt of lightweight
oil into the male quick-disconnect coupler (24).
Lubricating the Air Motor
CAUTION
Not lubricating the air motor will cause air motor failure.
If an air line lubricator is not installed, the air motor
must be manually lubricated every 8 hours. Lubricate
the agitator air motor by placing 10–20 drops of SAE
#10 light oil in the motor’s air inlet. Run the agitator for
about 30 seconds.
Additional Air Motor Service
If the air motor vanes need to be replaced, or if foreign
material is present in the motor chamber, an experi-
enced mechanic may remove the end plate opposite
the drive shaft end of the air motor. Do not pry with a
screwdriver; it will dent the surface of the plate and
body and cause leaks. Use a puller tool, which will
remove the end plate while maintaining the position of
the shaft.
New vanes should have the edges with cut corners
pointing toward the bottom of the vane slot.
To order an Air Motor Repair Kit, order Part No.
207335.