wsm M7040 - Page 523

ELECTRICAL SYSTEM
M6040, M7040, WSM
9-S54
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.
9Y1210143ELS0094US0
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.
9Y1210143ELS0095US0
Rectifier
1. Check the continuity across each diode of rectifier with an
analog ohmmeter.
2. The rectifier is normal if the diode in the rectifier conducts in one
direction and does not conduct in the reverse direction.
9Y1210143ELS0096US0
Slip ring O.D.
Factory specification
22.7 mm
0.894 in.
Allowable limit
22.1 mm
0.870 in.
Brush length
Factory specification
18.5 mm
0.728 in.
Allowable limit
5.0 mm
0.197 in.
KiSC issued 07, 2012 A