Graco 24G952, Instructions - Parts Manual

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Repair
3A1299K 29
Flush the Air Motor
If the motor is sluggish or inefficient, flush it with
non-flammable solvent in a well-ventilated area.
1. Follow the Pressure Relief Procedure . See
page 19.
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 apply pressure
until there is no trace of solvent in the exhaust air.
5. Lubricate the motor with a squirt of lightweight oil in
the chamber.
Pneumatic Agitator Assembly
Service
Air Motor
1. To remove the air motor for service, use a 3/16 hex
to remove the three setscrews (7) on the bung
adapter (5).
2. Lower the adapter (5) on the shaft (2) so coupler (3)
is accessible.
3. Use a 1/8 hex to remove the top two setscrews (4)
on the coupler (3).
4. Lift the air motor (1) straight up off the coupler (3).
• If the air motor (1) requires more than installation of
a service kit, it is usually quickest and easiest to
send it to the Graco distributor for repair or replace-
ment.
• If the air motor blades need replacing or foreign
material is present in the motor chamber, an experi-
enced mechanic may remove the end plate oppo-
site 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.
Shaft and Agitator Blades
1. Remove the shaft (2) from the tank. Clean with a
compatible solvent and inspect the shaft (2) and
blades (13, 14) for wear or damage.
2. If parts need replacing, follow Air Motor procedure
to remove the air motor.
3. Use the 1/8 hex to remove the other two
setscrews (4) on the coupler.
4. Slide the shaft off (2).
5. If needed, use a 3 mm (1/8 in.) hex to remove the
setscrew (4) on the hub assembly (13 or 14). Slide
the hub/blade assembly off of the shaft.
6. To install a new hub/blade assembly, slide it onto
the shaft. The setscrew must always remain on the
top, with the blades hanging down, so the blades
will pass into and out of the bung hole.
NOTE: Air Motor Repair Kits are available. Order
repair kit 224954.
Reassembly
1. Slide the shaft (2) into the coupler (3). Use a 1/8 hex
to tighten the setscrews (4). Torque to 80 in-lb
(9 N•m).
2. Raise the bung adapter (5) on the shaft (2) to recon-
nect to the air motor. Use a 3/16 hex to tighten the
three setscrews (7) on the bung adapter. Torque to
80 in-lb (9 N•m).
NOTICE
Not lubricating the air motor will cause air motor fail-
ure.
NOTICE
Damage to the level sensors may occur when an
agitator is removed. To avoid damage to level sen-
sors, remove the agitator assembly while keeping
the agitator blades away from the level sensor
assemblies.