INSPECT STARTER ARMATURE ASSEMBLY
Measure the resistance.
Measure the resistance between the segments of the commutator.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the armature assembly.
Measure the resistance between a segment of the commutator and armature coil core.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the armature assembly.
Inspect the commutator circle runout.
Place the commutator on V-blocks.
Using a dial indicator, measure the circle runout.
| Standard circle runout |
|---|
| 0.02 mm (0.000787 in.) |
| Maximum circle runout |
|---|
| 0.04 mm (0.00157 in.) |
If the runout is more than the maximum, replace the armature assembly.
Using a vernier caliper, measure the commutator diameter.
| Standard commutator diameter |
|---|
| 32.2 mm (1.27 in.) |
| Minimum commutator diameter |
|---|
| 31.1 mm (1.22 in.) |
If the diameter is less than the minimum, replace the armature assembly.
Using a vernier caliper, measure the undercut depth of the commutator.
| Standard undercut depth |
|---|
| 0.9 mm (0.0354 in.) |
| Minimum undercut depth |
|---|
| 0.4 mm (0.0157 in.) |
If the depth is less than the minimum, replace the armature assembly.
INSPECT STARTER BRUSH HOLDER ASSEMBLY
Using a vernier caliper, measure the brush length.
| Standard brush length |
|---|
| 14.0 mm (0.551 in.) |
| Minimum brush length |
|---|
| 9.0 mm (0.354 in.) |
If the length is less than the minimum, replace the starter brush holder assembly.
Check the brush holder.
Measure the resistance between the brushes.
| Standard Resistance | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the starter brush holder assembly.
INSPECT STARTER CLUTCH SUB-ASSEMBLY
Check the starter clutch pinion gear.
Rotate the pinion gear clockwise and check that it turns freely. Try to rotate the pinion gear counterclockwise and check that it locks.
If the result is not as specified, replace the starter clutch sub-assembly.
INSPECT MAGNET STARTER SWITCH ASSEMBLY
Check the plunger.
Install the plunger and spring onto the switch body.
Push in the plunger and check that it returns quickly to its original position.
If the result is not as specified, replace the magnet starter switch assemby.
Check if the pull-in coil has an open circuit.
Measure the resistance between terminal 50 and terminal C.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the magnet starter switch assembly.
Check if the hold-in coil has an open circuit.
Measure the resistance between terminal 50 and the switch body.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the magnet starter switch.