Starter - Kubota GL6000 Workshop Manual

GL6000, GL7000, GL9000, GL11000, WSM

(7) Starter

Commutator and Mica
1. Check the contact face of the commutator for wear, and grind the
commutator with emery paper if it is slightly worn.
2. Measure the commutator O.D. with an outside micrometer at
several points.
3. If the minimum O.D. is less than the allowable limit, replace the
armature.
4. If the difference of the O.D.'s exceeds the allowable limit, correct
the commutator on a lathe to the factory specification.
5. Measure the mica undercut.
6. If the undercut is less than the allowable limit, correct if with a saw
blade and chamfer the segment edges.
Factory
spec.
Commutator
O.D.
Allowable
limit
Factory
spec.
Difference of
O.D.'s
Allowable
limit
Factory spec.
Mica undercut
Allowable limit
(1) Segment
(2) Undercut
(3) Mica
Brush Wear
1. If the contact face of the brush is dirty or dusty, clean it with emery
paper.
2. Measure the brush length (A) with vernier calipers.
3. If the length is less than the allowable limit, replace the yoke
assembly and brush holder.
Factory spec.
Brush length (A)
Allowable limit
(A) Brush Length
1-S59
Electromagnetic 28.0 mm
drive type 1.102 in.
Planetary gear 30.0 mm
reduction type 1.181 in.
Electromagnetic 27.0 mm
drive type 1.063 in.
Planetary gear 29.0 mm
reduction type 1.142 in.
Electromagnetic Less than 0.05 mm
drive type
Planetary gear Less than 0.02 mm
reduction type 0.0008 in.
Electromagnetic 0.4 mm
drive type 0.016 in.
Planetary gear 0.05 mm
reduction type 0.0020 in.
0.50 to 0.80 mm
0.020 to 0.031 in.
0.20 mm
0.0079 in.
(a) Correct
(b) incorrect
16.0 mm
0.630 in.
10.5 mm
0.413 in.
KiSC issued 05, 2015 A
ENGINE
0.002 in.
W1075277
W1075476