Service
Service
Service
Moving parts, such as an impeller blade, can cut
or amputate fingers. To reduce the risk of serious
injury, always shut off the agitator and disconnect
the air line before checking or repairing the agitator.
Before performing any service procedure, follow the
Pressure Relief Procedure, page 13
.
If the air motor requires more than installation of a
service kit, it is usually quickest and easiest to send it
to a Graco distributor for repair or replacement.
Motor rebuild kits are available and listed in the table
below. See manual 3A5050 for more information.
Kit
Kit
Kit
Description
Description
Description
25M535
Full air motor rebuild kit
25P720
Needle bearing rebuild kit
25P721
Single piston assembly rebuild kit
25P860
End cap kit
19Y509
Muffler kit (set of 3)
Removing
Removing
Removing the
the
the Air
Air
Air Motor
Motor
Motor
To remove the air motor for service, follow these
steps,
1.
Remove the screw (75) holding the guard and
then remove the guard (74).
2.
Remove the four screws (26) securing the motor
to the mounting bracket (58).
3.
Remove the three screws (35) securing the
motor (34) the adapter plate (22).
4.
Disconnect the air regulator (38).
Installing
Installing
Installing the
the
the Air
Air
Air Motor
Motor
Motor
To install the air motor, follow these steps.
1.
Secure the motor (34) to the adapter plate (22)
using three screws (35) . Torque to 150–170
in-lbs (17–19 N•m).
2.
Install the upper coupling half (52b) on the motor
shaft. Lightly tighten the set screw. You will
tighten it further in a later step.
3.
Install the lower coupling half (52c) on the
agitator shaft (47). Do not tighten the set screw
at this time.
4.
Install the motor (34) and adapter plate (22)
assembly on the top of the bracket (58) using
the four screws (26). Do not tighten the screws
securely at this time.
16
3A4797F
