Inspection - Mitsubishi S3L Service Manual

STARTER
S
Starter
116 / 195 116 / 195
S1
S2
Battery
29.1.1 Removing Pinion
The pinion can be removed when it is held in the
pushed-out position during energization of the solenoid
switch.
Disconnect the M-terminal connector and make a
circuit that connects the starter motor and the battery
as shown in the drawing. Close switches S1 and S2 to
make the pinion come out and rotate. Then, open
switch S2. The pinion will stop rotating but will stay in
the pushed-out position. Apply a pipe-shaped
implement to the pinion stopper and lightly tap it with a
hammer to remove the pinion.
If the pinion returns to the retracted position before
disengagement of the stopper while the tool is being
tapped, repeat the procedure from the beginning.
29.1.2 Ball
The ball at the end of the armature acts as a bearing for
movement of the armature in the thrust direction. When
the armature is removed, the ball may stick to the
grease on it. Be careful not to lose the ball.

29.2 Inspection

29.2.1 Armature
1. Coil Short Circuit Test
Place the armature on a growler tester. Hold an
iron rod parallel with the armature and slowly
rotate the armature by hand. If the iron rod vibrates
or is pulled toward the armature, the armature has
a short-circuited coil and must be replaced.
2. Coil Ground Test
Check whether continuity exists between the
commutator and shaft (or core). If continuity exists,
the coil is grounded and the armature must be
replaced.
ENGLISH Service Manual Mitsubishi SL-Series diesel engines
ELECTRICAL SYSTEM
Version 08/2004