User's Manual

Repair
54 332144C
Motor Brushes
NOTE: Replace brushes worn to less than 1/2 in. (13
mm). Brushes wear differently on each side of motor;
check both sides. Brush Repair Kit 287735 is available;
kit includes instruction sheet 406582.
NOTE: Motor commutator should be smooth. If not,
resurface commutator or replace motor.
1. See Before Beginning Repair, page 39.
2. Relieve pressure, page 23.
3. Remove four screws (91) and motor shroud (89).
See F
IG . 18.
4. Remove fans (16) and disconnect cable (80). See
F
IG . 20.
5. Loosen pump inlet and outlet connections.
6. Remove the display control cover (26). Disconnect
motor cables as follows:
a. Unplug motor power connector.
b. Unplug motor temp switch harness from con-
nector J9. Disconnect grounding cable from
grounding screw.
7. To replace the front motor brush:
a. Remove the two bolts and access cover plate.
See F
IG . 19.
b. Remove old brushes and install new ones sup-
plied in kit.
8. To replace the rear motor brush:
a. Remove motor mounting bolts. Slide the motor
forward and lean on the cart frame.
a. Remove the two bolts and access cover plate.
See F
IG . 19.
b. Remove old brushes and install new ones sup-
plied in kit.
9. See instruction sheet 406582, included with Brush
Repair Kit 287735.
Fans
1. Disconnect fan cable (80) from fan (16). With Motor
Power on, test cable connector for line voltage (120
V or 230 V).
2.
If voltage is 120 V or 230 V, fan is defective.
Remove screws holding fan to shield (17). Install
new fan in reverse order.
3.
If voltage is not 120 V or 230 V, check fan cable
connection at terminal blocks 1 and 2; see F
IG . 23
on page 72.
F IG . 19: Motor Brushes
F
IG . 20. Fans
ti21916a
16
ti21848a
80
17