© December 2007
10-6
2007 Eagle Electric Golf Car Service Manual
Section 10 - Traction Drive System
Figure 10-11. Checking Armature for Grounded Circuits
Figure 10-12. Checking Armature for Shorted Windings
Figure 10-13. Brush Spring Pull Test
Figure 10-14. Testing for Continuity Between Motor Frame and Field Coil
Bearing
After the motor has been disassembled, it is recommended that a
new bearing be installed. Bearing may appear and feel ok, how-
ever, bearing may have been damaged during removal.
Frame and Field Coils
NOTICE
Do not remove the fi eld coils (9, Figure 10-9), from the motor
frame unless it is absolutely necessary for repair. Removal
and re-installation could shorten fi eld coil life.
There should be no continuity between the frame of the motor and
fi eld coil (Figure 10-9). Set the volt ohm meter (VOM) to measure
Ohms. See Figure 10-14.
Field Coil Maintenance
NOT recommended by Columbia.
Inspection
Motors that have been disassembled for servicing should also in-
clude a complete inspection of the frame and fi eld assembly. It
is not uncommon for the frame and fi eld assembly of a motor to
become exceptionally dirty after many hours of operation. This
may result in a grounding condition due to dirt, grease and other
foreign materials
Traction Motor Reassembly
1. Always use a new bearing when reassembling a motor. Press
bearing into motor head. Press only against the outer race.
See Figure 10-15. Install snap ring to retain bearing. Figure
10-16.
2. Assemble brush assemblies into brush box assembly.
3. Position brush holder into motor head as shown in Figure 10-
16. Make sure that the terminals for the brushes are loose
and free.
4. Install insulators and brush leads into motor head. See Figure
10-17. Brush motor terminals, A1 and A2, should be torqued
to 140 in. lbs. (15.8 Nm).
5. Pull back each brush in it’s holder, allowing the spring to rest
against the side of each brush. This will hold each brush in
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