Replacing the Motor Assembly
(with Electronic Control)
Electrostatic discharge (ESD) potential could cause
damage to electronic control. Use SprayTECH ESD wrist
strap P/N 0507958 or equivalent when working on
electronic control with electronic cover removed.
1. Perform the Pressure Relief Procedure and unplug the
sprayer.
2. Turn the pressure control knob to the “1” or “2” position to
make sure the power supply has discharged.
3. Loosen and remove the four motor shroud screws.
Remove the motor shroud.
4. Release the tie wrap on the top of the baffle assembly and
slip the baffle assembly down off of the motor.
5. Loosen and remove the three electronic cover screws.
Lift the electronic cover off of the electronic control
assembly on the motor.
6. At the electronic control assembly:
a. Disconnect the white wire coming from the power cord
and the white wire coming from the relay.
b. Disconnect the three wires coming from the
potentiometer.
7. Loosen and remove the three motor mounting screws.
8. Pull the motor out of the gearbox housing.
9. With the motor removed, inspect the gears in the gearbox
housing for damage or excessive wear. Replace the
gears, if necessary.
10. Install the new motor into the gearbox housing. Make
sure the housing gasket is positioned properly.
11. Secure the motor with the three motor mounting screws.
12. Reconnect the wires to the electronic control assembly
(refer to the electrical schematic in the Parts List section
of this manual).
13. Position the electronic cover over the electronic control
assembly. Secure the electronic cover with the three
electronic cover screws.
Use only SprayTECH electronic cover screws to secure the
electronic cover (see Drive Assembly parts list). Use of any
other screws may damage the electronic control assembly.
14. Slip the baffle assembly up and around the motor. Secure
the baffle assembly with the tie wrap.
15. Slide the motor shroud over the motor.
16. Secure the motor shroud with the four motor shroud screws.
Electronic Cover
Motor Shroud
Motor Shroud Screws
Motor
Baffle Assembly
Housing Gasket
Electronic Control
Assembly
Motor Mounting
Screw
Electronic Cover
Screw
Gearbox
Housing
CAUTION
WARNING
Replacing the Gears
1. Perform the Pressure Relief Procedure and unplug the
unit.
2. Turn the pressure control knob to the “1” or “2” position to
make sure the power supply has discharged.
3. Loosen and remove the four motor shroud screws.
Remove the motor shroud.
4. Release the tie wrap on the top of the baffle assembly and
slip the baffle assembly down off of the motor.
5. Loosen and remove the three electronic cover screws.
Lift the electronic cover off of the electronic control
assembly on the motor.
6. At the electronic control assembly:
a. Disconnect the white wire coming from the power cord
and the white wire coming from the relay.
b. Disconnect the three wires coming from the
potentiometer.
7. Loosen and remove the three motor mounting screws.
8. Pull the motor out of the gearbox housing.
9. Inspect the armature gear on the end of the motor for
damage or excessive wear. If this gear is completely
worn out, replace the motor.
10. Remove and inspect the 1st stage gear and 2nd stage
gear assemblies for damage or excessive wear. Replace,
if necessary.
11. Remove and inspect the front gear box assembly for
damage or excessive wear. If damaged or worn, replace
the front gear box assembly.
12. Install the motor into the gearbox housing. Make sure the
housing gasket is positioned properly.
13. Secure the motor with the three motor mounting screws.
14. Reconnect the wires to the electronic control assembly
(refer to the electrical schematic in the Parts List section
of this manual).
15. Position the electronic cover over the electronic control
assembly. Secure the electronic cover with the three
electronic cover screws.
16. Slip the baffle assembly up and around the motor. Secure
the baffle assembly with the tie wrap.
17. Slide the motor shroud over the motor.
18. Secure the motor shroud with the four motor shroud
screws.
Front End Bell
Assembly
Armature Gear
1st Stage Gear
2nd Stage Gear
Front Gear Box
Assembly
Housing
Gasket
NOTE: Clean and refill the gear box cavity up to the
rear face of each gear with grease (P/N
9870307).
© SprayTECH. All rights reserved.
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