PROCEDURE
INSPECT STARTER ASSEMBLY
CAUTION:
As a large electric current passes through the cable during this inspection, a thick cable must be used. If not, the cable may become hot and cause injury.
Note
Perform each of the following tests within 3 to 5 seconds to prevent the coil from burning out.
Perform a pull-in test.
Remove the nut and disconnect the lead wire from terminal C.
| *a | Terminal C |
| *b | Terminal 50 |
| *c | Body |
Connect the battery to the magnet starter switch assembly as shown in the illustration.
Check that the clutch pinion gear moves outward.
If the clutch pinion gear does not move outward, replace the magnet starter switch assembly.
| *a | Terminal C |
| *b | Terminal 50 |
| *c | Body |
Perform a hold-in test.
Disconnect the negative (-) lead from terminal C. Check that the clutch pinion gear does not return inward.
If the clutch pinion gear returns inward, replace the magnet starter switch assembly.
| *a | Terminal C |
| *b | Terminal 50 |
| *c | Body |
Check return operation.
Disconnect the negative (-) lead from the switch body. Check that the clutch pinion gear moves inward.
If the clutch pinion gear does not move inward, replace the magnet starter switch assembly.
Perform a no-load performance test.
Connect the lead wire to terminal C with the nut. Make sure that the lead wire is not grounded.
Clamp the starter assembly in a vise between aluminum plates.
Note
Ensure that the starter is secured in the vise to prevent it from falling out.
| *a | Terminal 30 |
| *b | Terminal 50 |
| *c | Body |
Connect the battery and an ammeter to the starter as shown in the illustration.
Note
Do not allow any lead to get caught as the pinion gear operates.
Check that the starter rotates smoothly and steadily with the clutch pinion gear moved outward. Measure the current according to the value(s) in the table below.
| Standard Current | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the starter assembly.
INSPECT STARTER ARMATURE ASSEMBLY
| *a | Segment |
Check the commutator for an open circuit.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the starter armature assembly.
| *a | Armature Coil Core |
| *b | Commutator |
Check the commutator for a short circuit.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the starter armature assembly.
Check the commutator appearance.
If the surface is dirty or burnt, restore it with sandpaper (No. 400) or on a lathe.
| *a | Armature Shaft |
Check the commutator for runout.
Place the armature shaft on V-blocks.
Using a dial indicator, measure the runout.
| Standard Runout |
|---|
| 0.02 mm (0.000787 in.) |
| Maximum Runout |
|---|
| 0.05 mm (0.00197 in.) |
If the runout is greater than the maximum, replace the starter armature assembly.
Using a vernier caliper, measure the commutator diameter.
| Standard Diameter |
|---|
| 29 mm (1.14 in.) |
| Minimum Diameter |
|---|
| 28 mm (1.10 in.) |
If the diameter is less than the minimum, replace the starter armature assembly.
Check that the undercut portion between the segments is free of foreign matter and measure its depth.
| Standard Undercut Depth |
|---|
| 0.7 mm (0.0276 in.) |
| Minimum Undercut Depth |
|---|
| 0.2 mm (0.00787 in.) |
If the undercut depth is less than the minimum, adjust it with a hacksaw.
INSPECT STARTER BRUSH HOLDER ASSEMBLY
Using a vernier caliper, measure the brush length.
| Standard Length |
|---|
| 14.4 mm (0.567 in.) |
| Minimum Length |
|---|
| 9.0 mm (0.354 in.) |
If the brush length is less than the minimum, replace the starter brush holder assembly.
Check the brush holder.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the starter brush holder assembly.
INSPECT STARTER CENTER BEARING CLUTCH SUB-ASSEMBLY
Inspect the gear teeth of the planetary gears and internal gear of the starter center bearing clutch sub-assembly for wear and damage.
If damaged, replace the planetary gears or starter center bearing clutch sub-assembly. Also check the planetary gears for wear and damage.
| *a | Free |
| *b | Lock |
Check the movement of the clutch pinion gear.
While holding the starter center bearing clutch sub-assembly, rotate the clutch pinion gear clockwise and check that it turns freely.
Try to rotate the clutch pinion gear counterclockwise and check that it locks.
If the clutch pinion gear cannot be turned clockwise smoothly, or does not lock in the counterclockwise direction, replace the starter center bearing clutch sub-assembly.
INSPECT MAGNET STARTER SWITCH ASSEMBLY
Check the plunger.
Push in the plunger and check that it returns quickly to its original position.
If necessary, replace the magnet starter switch assembly.
| *a | Terminal 50 |
| *b | Terminal C |
Check the pull-in coil for an open circuit.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the magnet starter switch assembly.
| *a | Switch Body |
| *b | Terminal 50 |
Check the holding coil for an open circuit.
Measure the resistance according to the value(s) in the table below.
| Standard Resistance | ||||||
|---|---|---|---|---|---|---|
|
If the result is not as specified, replace the magnet starter switch assembly.