Toyota 4-Runner 1985 Repair Manual page 300

STARTING SYSTEM -
Starter ST-5
ST0010
ST0012
5T0013
3. REMOVE CLUTCH ASSEMBLY AND GEARS FROM
STARTER HOUSING
4. REMOVE STEEL BALL AND SPRING
Using a magnetic finger, remove the spring and steel ball
from the clutch shaft hole.
5. REMOVE BRUSHES AND BRUSH HOLDER
(a) Remove the end cover from the field frame.
(b) Remove the O-ring (1.4 kW type only).
(c) Using a screwdriver or steel wire, separate the brush
springs, and remove the brushes from the brush
holder.
(d) Pull the brush holder off the field frame.
6. REMOVE ARMATURE FROM FIELD FRAME
INSPECTION OF STARTER
Armature Coil
1. INSPECT THAT COMMUTATOR IS NOT GROUNDED
Using an ohmmeter, check that there is no continuity be-
tween the commutator and armature coil core.
If there is continuity, replace the armature.
2. INSPECT COMMUTATOR FOR OPEN CIRCUIT
Using an ohmmeter, check for continuity between the
segments of the commutator.
If there is no continuity between any segment, replace the
armature.
Commutator
1. INSPECT COMMUTATOR FOR DIRTY AND BURNT
SURFACES
If the surface is dirty or burnt, correct with sandpaper (No.
400) or a lathe.
2. INSPECT COMMUTATOR CIRCLE RUNOUT
If the circle runout is greater than the maximum, correct
with a lathe.
Maximum circle runout: 0.05 mm (0.0020 in.)