INSPECT STARTER ARMATURE ASSEMBLY
If the surface of the commutator is dirty or burned, polish the part with sandpaper (#400) or replace the armature.
Inspect the commutator for an open circuit.
Using an ohmmeter, check that there is resistance between the segments of the commutator.
Standard |
---|
1 Ω or lower |
If the result is not as specified, replace the armature assembly.
Inspect the commutator for a short circuit.
Using an ohmmeter, check that there is no resistance between the commutator and armature core.
Standard |
---|
10 kΩ higher |
If the result is not as specified, replace the armature assembly.
Inspect the commutator circle runout.
Place the armature on the V-blocks.
Using a dial indicator, measure the circle runout.
Maximum circle runout |
---|
0.05 mm (0.0020 in.) |
If the runout is greater than the maximum, correct with sandpaper (#400) or replace the armature assembly.
Using vernier calipers, measure the commutator diameter.
Standard diameter |
---|
35.0 mm (1.378 in.) |
Minimum diameter |
---|
34.0 mm (1.339 in.) |
If the diameter is less than the minimum, replace the armature assembly.
Measure the undercut depth of the commutator.
Standard depth |
---|
0.7 mm (0.028 in.) |
Minimum depth |
---|
0.2 mm (0.008 in.) |
If the undercut depth is less than the minimum, correct it with a hacksaw blade.
Inspect the bearings.
Check that the bearing rotates smoothly.
If necessary, replace them.
INSPECT STARTER YOKE ASSEMBLY
Inspect for an open circuit.
Check that there is continuity between the terminal C wire and brushes.
Standard |
---|
1 Ω or lower |
If the result not as specified, replace the starter yoke assembly.
Inspect for a short circuit.
Check that there is no continuity between the terminal C wire and starter yoke body.
Check that there is no continuity between the brushes and stater yoke body.
Standard |
---|
10 kΩ or higher |
If the result is not as specified, replace the starter yoke assembly.
INSPECT BRUSH
Using vernier calipers, measure the brush length.
Standard brush length |
---|
16.5 mm (0.650 in.) |
Minimum brush length |
---|
9.0 mm (0.354 in.) |
If the length is less than the minimum, replace the brush holder and starter yoke assembly.
INSPECT STARTER BRUSH HOLDER ASSEMBLY
Using an ohmmeter, check that there is continuity between the positive and negative brush holders.
Standard |
---|
10 kΩ or higher |
If the result is not as specified, replace the brush holder.
Using a pull scale, measure the brush spring load.
Standard spring load |
---|
26.5 to 32.3 N (2.7 to 3.3 kgf, 6.0 to 7.3 lbf) |
Minimum spring load |
---|
17.6 N (1.8 kgf, 4.0 lbf) |
If the spring load is less than the minimum, replace the brush springs.
INSPECT STARTER CLUTCH SUB-ASSEMBLY
Check that the starter clutch operates.
If the starter clutch does not operate, replace it.
INSPECT MAGNET STARTER SWITCH ASSEMBLY
Inspect the pull-in coil resistance.
Using an ohmmeter, check that there is continuity between terminals 50 and C.
Standard |
---|
1 Ω or lower |
If the result is not as specified, replace the magnet starter switch assembly.
Inspect the holding coil continuity.
Using an ohmmeter, check that there is continuity between terminals 50 and body.
Standard |
---|
2 Ω or lower |
If the result is not as specified, replace the magnet starter switch assembly.