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Armature Inspection; Starter Motor Brush Length; Brush Assembly Inspection - Kawasaki ZR-7S Service Manual

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14-44 ELECTRICAL SYSTEM
Electric Starter System
• Measure the diameter [AJ of the commutator [8].
*Replace the starter motor with a new one if the commu-
tator diameter is less than the selViee limit.
Commutator Diameter
Standard:
28 mm (1.10 in.)
Service Limit:
27 mm (1.06 in.)
Armature Inspection
• Using the x 1
n
range of the hand tester, measure the
resistance between any two commutator segments {A].
Special Tool- Hand Tester: 57001-1394
*11 there is a high resistance or no reading
(<>:"
between
any two segments, a winding is open. Replace the starter
motor.
• Using the highest range of the hand tester, measure the
resistance between the segments and the shaft [8].
*
If there is any reading at all, the armature has short. Re-
place the starter motor.
NOTE
OEven is the foregoing checks show the armature to be
good,
it
may be defective in some manner not readily
detected with the hand tester.
If
a/l other starter motor
and starter motor circuit components check good, but
the starter motor still does not tum over or only turns
over weakly, replace the starter motor with
a
new one.
Starter Motor Brush Length
• Measure the overall length (A] of each brush.
Starter Motor Brush Length
Standard:
8 rnm (0.31 in.)
Service Limit:
5 mm (0.20 in.)
*If any is worn down to the service limit, replace the brush
plate assembly.
Brush Assembly Inspection
• Using the x 1
n
range of the hand tester, measure the
resistance as shown
Terminal Bolt and Positive Brush [A]
Brush Plate and Negative Brush [B]
*If there is not close to zero ohms, the brush lead has an
open. Replace the brush plate assembly.
A

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