Description
The traction motor is a three-phase AC induction mo-
tor. DC battery current is converted into AC current in
the controller and then supplied to the traction motor.
The controller controls motor speed and direction.
Each traction motor contains an encoder bearing in
the flange (brake end) that provides continuous motor
speed and direction information to the controller. A
temperature sensor built into the stator continually
monitors motor temperature. Brass terminals receive
the power cables from the controller and a small con-
nector links the encoder bearing wiring harness to the
main wiring harness. A shaft extends out the top and
bottom of the traction motor. The splined end of the
shaft engages the input gear in the drive unit. A short,
round section of the shaft protrudes from the top of
the motor and is secured in place with a snap ring
which secures it to the flange. This end also supports
the parking brake hub using a woodruff key and two
additional small snap rings.
AC Motor Repair
REMOVE
WARNING
The AC traction motor is heavy. To prevent injury,
use a lifting device of adequate capacity for lifting
the assembly.
It is not necessary to remove the traction motor from
the lift truck to make some repairs. Perform only the
steps necessary to safely complete the required serv-
ice.
1.
Turn the key switch to the
OFF
position and dis-
connect the battery connector. Discharge the ca-
pacitors. See Special Precautions.
2.
Remove the steer support from the lift truck. Refer
to
Steering Mechanism
1600YRM1504.
CAUTION
Remove the brake only as directed. Changes to
adjustment screws may render the brake unusa-
ble. The brake is factory set and cannot be adjus-
ted if altered.
NOTE:
The brake may be removed at this point.
However, it is not necessary to remove the brake if
the motor will not be disassembled.
3.
Remove the brake from the top of the traction mo-
tor if necessary. See
Brakes
1800YRM1505.
4.
Identify, tag, and disconnect power cables and
wiring connecting traction motor to the truck elec-
trical system.
5.
Remove the four capscrews and lockwashers
holding traction motor to the drive unit.
6.
Attach a sling and a lifting device to the traction
motor. Lift the motor from the drive unit and posi-
tion it securely at a suitable work station. Remove
the sling from the motor.
DISASSEMBLE
Some disassembly may be performed with the trac-
tion motor installed in the lift truck. Perform only the
steps necessary to safely complete the required serv-
ice.
1.
If the traction motor is not to be removed from the
lift truck, remove the steer support from the lift
truck.
Refer
to
Steering
Mechanism
1600YRM1504.
2.
Remove the brake and hub assembly and both
the upper and lower snap rings from the motor
shaft if installed. Refer to
Brakes
1800YRM1505.
3.
Remove the four long screws holding the traction
motor together.
4.
Remove the snap ring from the shaft securing the
flange (brake end) to the shaft. Slide the flange
(brake end) off the shaft and remove from the top
of the motor.
5.
Remove the armature from the stator if neces-
sary.
6.
Separate the stator from the bottom flange (drive
end) if necessary.
Description
0620 YRM 1513
4
Summary of Contents for 524150797
Page 1: ...Maintenance METRIC AND INCH SAE FASTENERS PART NO 524150797 8000 YRM 0231 ...
Page 4: ......
Page 8: ...Table 1 Bolts and Screws General 8000 YRM 0231 4 ...
Page 9: ...Table 2 Studs and Nuts 8000 YRM 0231 General 5 ...
Page 10: ...Table 3 Torque Nuts General 8000 YRM 0231 6 ...
Page 11: ...Table 4 Torque Nuts With Nylon Insert 8000 YRM 0231 General 7 ...
Page 20: ...NOTES 16 ...
Page 21: ......
Page 22: ...8000 YRM 0231 12 18 8 16 10 15 3 15 10 13 12 04 ...
Page 23: ...Maintenance INDUSTRIAL BATTERY PART NO 524158040 2240 YRM 0001 ...
Page 26: ......
Page 47: ......
Page 48: ...2240 YRM 0001 10 18 2 18 8 16 7 16 1 16 9 15 ...
Page 49: ...Maintenance AC MOTOR REPAIR MP20 A249 MPB045VG A245 PART NO 550036879 0620 YRM 1513 ...
Page 52: ......
Page 58: ...Figure 5 Traction Motor Repair A245 AC Motor Repair 0620 YRM 1513 6 ...
Page 62: ...NOTES 10 ...
Page 63: ......
Page 64: ...0620 YRM 1513 3 15 12 13 4 12 ...
Page 65: ...Maintenance MASTER DRIVE UNIT MP20 A249 MPB045VG A245 PART NO 550036880 0630 YRM 1503 ...
Page 68: ......
Page 75: ......
Page 76: ...0630 YRM 1503 3 15 12 13 4 12 ...
Page 77: ...Maintenance STEERING MECHANISM MP20 A249 MPB045VG A245 PART NO 550036881 1600 YRM 1504 ...
Page 80: ......
Page 83: ...Figure 2 Control Handle Assembly Lift Truck Models MP20 A249 1600 YRM 1504 Control Handle 3 ...
Page 86: ...Figure 4 Delivery Handle Optional Control Handle 1600 YRM 1504 6 ...
Page 91: ......
Page 92: ...1600 YRM 1504 12 18 11 17 7 16 3 15 12 13 4 12 ...
Page 93: ...Maintenance BRAKES MP20 A249 MPB045VG A245 PART NO 550036882 1800 YRM 1505 ...
Page 96: ......
Page 104: ...NOTES 8 ...
Page 105: ......
Page 106: ...1800 YRM 1505 3 15 12 13 4 12 ...
Page 107: ...Maintenance HYDRAULIC SYSTEM MP20 A249 MPB045VG A245 PART NO 550036883 1900 YRM 1506 ...
Page 110: ......
Page 117: ...Figure 4 Hydraulic Unit A249 1900 YRM 1506 Hydraulic Pump 7 ...
Page 127: ......
Page 128: ...1900 YRM 1506 2 15 12 13 4 12 ...
Page 129: ...Maintenance ELECTRICAL SYSTEM MP20 A249 MPB045VG A245 PART NO 550036885 2200 YRM 1508 ...
Page 163: ......
Page 164: ...2200 YRM 1508 6 18 11 16 10 16 8 16 4 15 12 14 ...
Page 165: ...Maintenance LIFTING MECHANISM MP20 A249 MPB045VG A245 PART NO 550036886 4000 YRM 1509 ...
Page 168: ......
Page 180: ...NOTES 12 ...
Page 181: ......
Page 186: ......
Page 192: ...NOTES 6 ...
Page 193: ......
Page 194: ...8000 YRM 1511 6 16 3 16 12 13 4 12 ...
Page 195: ...Maintenance DIAGRAMS MP20 A249 MP045VG A245 PART NO 550036889 8000 YRM 1512 ...
Page 198: ......
Page 201: ...Figure 1 Schematic Wiring Diagram Pallet Truck Sheet 2 of 3 8000 YRM 1512 General Notes 3 ...
Page 202: ...Figure 1 Schematic Wiring Diagram Pallet Truck Sheet 3 of 3 General Notes 8000 YRM 1512 4 ...
Page 203: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 1 of 7 8000 YRM 1512 General Notes 5 ...
Page 204: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 2 of 7 General Notes 8000 YRM 1512 6 ...
Page 205: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 3 of 7 8000 YRM 1512 General Notes 7 ...
Page 206: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 4 of 7 General Notes 8000 YRM 1512 8 ...
Page 207: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 5 of 7 8000 YRM 1512 General Notes 9 ...
Page 208: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 6 of 7 General Notes 8000 YRM 1512 10 ...
Page 209: ...Figure 2 Schematic Wiring Diagram Premium Walkie Sheet 7 of 7 8000 YRM 1512 General Notes 11 ...
Page 210: ...NOTES 12 ...
Page 211: ......
Page 212: ...8000 YRM 1512 3 18 12 14 1 14 12 13 7 13 4 12 ...
Page 213: ...Maintenance FRAME MPB045VG A245 PART NO 550093874 0100 YRM 1665 ...
Page 216: ......
Page 222: ...NOTES 6 ...
Page 223: ......
Page 224: ...0100 YRM 1665 7 16 12 13 ...
Page 225: ...Maintenance PERIODIC MAINTENANCE MPB045VG A245 PART NO 550093875 8000 YRM 1666 ...
Page 228: ......
Page 248: ...NOTES 20 ...
Page 249: ......
Page 250: ...8000 YRM 1666 3 19 2 19 10 15 6 15 3 15 12 13 ...
Page 251: ...Maintenance CONTROLLER DIAGNOSTICS MPB045VG A245 PART NO 550095689 9000 YRM 1671 ...
Page 337: ......
Page 342: ......
Page 349: ...Figure 6 Battery Charger Diagram GPT 2240 YRM 1890 Charging and Troubleshooting 7 ...
Page 360: ...NOTES 18 ...
Page 361: ......
Page 362: ...2240 YRM 1890 3 19 11 16 10 16 3 16 10 15 9 15 ...
Page 366: ......
Page 380: ...NOTES 14 ...
Page 381: ......
Page 382: ...2200 YRM 2030 6 17 11 16 10 16 ...