Kubota GL9000D-AU-B User Manual

ENGINE
GL6000A-AU-B, GL6000D-AU-B,GL9000A-AU-B, GL9000D-AU-B, WSM
1-S59
(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.
9Y1211607ENS0102US0
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.
9Y1211607ENS0103US0
Commutator O.D.
Factory
specifica-
tion
Electromag-
netic drive
type
28.0 mm
1.10 in.
Planetary gear
reduction type
30.0 mm
1.18 in.
Allowable
limit
Electromag-
netic drive
type
27.0 mm
1.06 in.
Planetary gear
reduction type
29.0 mm
1.14 in.
Difference of O.D.'s
Factory
specifica-
tion
Electromag-
netic drive
type
Less than
0.05 mm
0.002 in.
Planetary gear
reduction type
Less than
0.02 mm
0.0008 in.
Allowable
limit
Electromag-
netic drive
type
0.4 mm
0.02 in.
Planetary gear
reduction type
0.05 mm
0.002 in.
Mica undercut
Factory specification
0.50 to 0.80 mm
0.020 to 0.031 in.
Allowable limit
0.20 mm
0.0079 in.
(1) Segment
(2) Undercut
(3) Mica
(a) Correct
(b) Incorrect
Brush length (A)
Factory specification
16.0 mm
0.630 in.
Allowable limit
10.5 mm
0.413 in.
(A) Brush Length
KiSC issued 06, 2016 A

Kubota GL9000D-AU-B Specifications

General

Brand	Kubota
Model	GL9000D-AU-B
Category	Portable Generator
Language	English