Service; Removing The Air Motor - Graco 25C528 Instructions - Parts Manual

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.
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 the the Air Air Motor
Removing Removing the Air
Models Models Models 25C528, 25C528, 25C529, 25C528, 25C529, 25C533, 25C529,
1. Follow the Pressure Relief Procedure, page
2. Remove the air regulator by unscrewing the
swivel fitting (12).
• See Model 25C528, page 25
• See Model 25C529, page 28
• See Model 25C533, page 26
• See Model 25M481, page 27
3. Loosen the upper clamp (2) and raise the motor
so the upper two set screws (3) are accessible.
Use a 1/8 inch hex to remove the set screws
from the shaft.
4. Lift the air motor straight up off the shaft.
3A4792G
Motor
Motor
25C533, 25M481 25C533, 25M481 25M481
19.
Models 25C534, 25C534, 25C535 25C535
Models Models 25C534, 25C535
1. Follow the Pressure Relief Procedure, page
2. Remove the air regulator by
unscrewing the swivel fitting (11). See
Models 25C534, 25C535, page
3. Remove the screws (14) holding the motor
mounting plate (13) to the outlet housing (3).
4. Remove the socket head screws (2) holding the
motor (1) to the mounting plate.
5. Raise the motor so the two set screws (9) in the
shaft (4) are accessible. Use a 1/8 inch hex to
remove the set screws from the shaft.
6. Lift the air motor straight up off the shaft.
Model 25C530 Model Model 25C530 25C530
1. Follow the Pressure Relief Procedure, page
2. Remove the air regulator by unscrewing the
swivel fitting (9). See
3. Using a 3/16 inch hex, remove the three set
screws (8) on the bung adapter (4).
4. Raise the motor so the top two set screws (7) in
the coupler (3) are accessible. Use a 1/8 inch
hex to remove the top two set screws.
5. Lift the air motor (1) straight up off the coupler.
Models Models 25N881, Models 25N881, 25N882 25N881, 25N882 25N882
1. Follow the Pressure Relief Procedure, page
2. Remove the air regulator by
unscrewing the swivel fitting (5). See
Models 25N881, 25N882, page
3. Remove the screws (11) holding the bung
adapter (6) to the motor plate (7).
4. Lift the motor off the bung adapter (6) and
remove the screws (8) that attach the motor plate
(7) to the motor (1).
Service
19.
29.
19.
Model 25C530, page 30.
19.
31.
23