Kubota M8540 Workshop Manual page 553

M8540, M9540, WSM
Slip Ring
1. Check the slip ring for score.
2. If scored, correct with an emery paper or on a lathe.
3. Measure the O.D. of slip ring with vernier calipers.
4. If the measurement is less than the allowable limit, replace it.
Factory spec.
Slip ring O.D.
Allowable limit
Brush Wear
1. Measure the brush length with vernier calipers.
2. If the measurement is less than allowable limit, replace it.
3. Make sure that the brush moves smoothly.
4. If the brush is defective, replace it.
Factory spec.
Brush length
Allowable limit
Rectifier
1. Check the continuity across each diode of rectifier with an
ohmmeter.
2. The rectifier is normal if the diode in the rectifier conducts in one
direction and does not conduct in the reverse direction.
9-S52
ELECTRICAL SYSTEM
22.7 mm
0.894 in.
22.1 mm
0.870 in.
W1020208
18.5 mm
0.728 in.
5.0 mm
0.197 in.
W1020329
W1020452
KiSC issued 09, 2008 A