Service; Flushing The Air Motor; Servicing; Cleaning The Shaft - Graco A Series Instructions-Parts List Manual

Flushing the Air Motor

WARNING
FIRE AND EXPLOSION HAZARD
Do not use kerosene or other flam-
mable 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:
D Keep your face away from the exhaust port.
D Wear the appropriate protective clothing,
gloves, eyewear, and respirator.
If the motor is sluggish or inefficient, flush it with non-
flammable solvent in a well ventilated area.
The recommended solvent for air motors and lubri-
cated pumps is Gastr Flushing Solvent (Part No.
AH255 or AH255A) or Inhibisolr Safety Solvent.
1. Disconnect the air line and muffler.
2. Add several teaspoons of solvent or spray the sol-
vent directly into the motor.
3. Rotate the shaft by hand in both directions for a
few minutes.
4. Reconnect the air line, and slowly increase the air
pressure until there is no trace of solvent in the
exhaust air.
5. Re-lubricate the motor with a squirt of light-weight
oil in the chamber.
Gastr is a registered trademark of Gast Manufacturing.
Inhibisolr is a registered trademark of Penetone Corp.

Service

Servicing

D If the unit requires more than installation of a ser-
vice kit, it is usually quickest and easiest to send
the unit to the Graco distributor for repair or re-
placement.
D If the vanes need replacing, or if foreign material is
present in the motor chamber, an experienced me-
chanic may remove the end plate opposite the drive
shaft end. Do not pry with a screwdriver. It will dent
the surface of the plate and body, causing leaks.
Use a puller tool, which will remove the end plate
while maintaining the position of the shaft.
D New vanes should have the edges with cut corners
(or the notched edges, if the vanes are reversible)
pointing toward the bottom of the vane slot.

Cleaning the Shaft

Each week, clean any dried fluid from around the
bearing (21) and guide (6) area of the shaft (20).

Lubricating the Air Motor

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.
CAUTION
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