Club Car 1996 DS Golf Car Gasoline, Service Manual

Page: 532 / 544

Page 24-8
24
E
ARMATURE GROUND TEST
1. With a continuity tester or a multimeter set to ohms (
Ω
), place one probe on the commutator and the
other on the armature core. The continuity tester should not light. The multimeter should read no conti-
nuity (Figure 24-7, Page 24-6). If the reading is incorrect, replace the motor.
VISUAL INSPECTION OF WINDINGS
Burned or scorched insulation on the windings indicates that the motor has overheated due to overloads or
to grounded or shorted coil windings. If the insulation on the windings is scorched, replace the motor or the
housing with winding assembly.
INSPECTION OF MOTOR COMPONENTS
1. Inspect the insulators (4 and 7) for cracks or other damage (Figure 24-8, Page 24-7).
2. Inspect the brushes (13) for damage or excessive wear (Figure 24-8, Page 24-7). If brushes need to
be replaced, See NOTE below.
3. Inspect the brush springs (14) (Figure 24-8, Page 24-7). Replace springs that are discolored from heat
(are straw colored or have a blue tint). Replace springs which apply a force of less than one pound at
the position that the spring would be if a new brush were installed (Figure 24-9).
Inspection of the Bearing
1. Using a clean cloth, wipe the carbon dust off of the bearing. Inspect the bearing by spinning it by hand
and checking for both axial (A) and radial (B) play (Figure 24-10).
2. Replace the bearing if it is noisy, does not spin smoothly, or has excessive play. Check the bearing and
replace if rusted, worn, cracked, or if there is an abnormal color change in the metal of the bearing. The
• DO NOT SUBMERGE THE ARMATURE IN SOLVENT.
• BEFORE TESTING THE ARMATURE, WIPE IT CLEAN WITH A CLEAN CLOTH. REMOVE ANY
CARBON DUST AND METAL PARTICLES FROM BETWEEN THE COMMUTATOR BARS.
• WHEN INSTALLING NEW BRUSHES, BRUSH SETS CAN BE REMOVED AND REPLACED ONE
AT A TIME. THIS METHOD ASSURES THAT THE TERMINALS AND BRUSHES WILL BE PROP-
ERLY POSITIONED IN THE RIGGING. SEE PAGE 24-12 FOR BRUSH INSTALLATION.
• WHEN REPLACING BRUSHES, ALWAYS REPLACE ALL FOUR BRUSHES. NEVER REPLACE
ONLY TWO.
• INSTALL THE BRUSHES 180° APART FROM THE OTHER BRUSH IN THE SAME RIGGING.
• WHEN CHECKING BRUSH SPRING TENSION, IN STEP 3, DO NOT MOVE THE SPRING
BEYOND THE POINT AT WHICH IT WOULD BE IF NEW BRUSHES WERE INSTALLED. EXERT-
ING EXCESSIVE FORCE WILL DAMAGE THE SPRING.
CAUTION
NOTE
NOTE
CAUTION