Drive Motor 24 Volt
PS S1.1 1700
F-code Section C-code
Version no T-code
001 OE35
© BT Products
71
Service Manual 1997-10-21
2. Inspection and Troubleshooting
After the motor components have been thoroughly cleaned
and dried, they should be inspected for the following:
2.1. Drive End Head
1. Check bearing recess for any signs of wear.
2. Check mounting holes for any stripped or crossed
threads or broken studs.
2.2. Commutator End Head
1. Check bearing recess for any signs of wear.
2. Check brush holder insulation for cracks or any signs
of burning.
3. Check brush holders and springs for wear.
2.3. Bearings
1. Check bearings by turning them with your fingers. Feel
for binding or gritty effects and excessive looseness or
wobble. A good bearing should also have a small
amount of drag or stiffness caused by the lubrication
but should turn smoothly. If the bearing turns very
freely, it should be replaced. Bearings should also be
changed, if worn out, damaged or removed from
armature shaft.
Ball bearings that have been pulled off of shafts,
pressed out of end heads, or side loaded in such a
way as to apply pressure on the balls and races must
be replaced. Although the bearing may appear or feel
good, the bearing races have been brinelled and will
fail within a relatively short period of service.
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