PROCEDURE
INSPECT STARTER ASSEMBLY
Note
The following tests must be performed within 5 seconds to prevent the coil from burning out.
Perform a pull-in test.
Remove the nut and disconnect the motor lead wire from terminal C.
| *1 | Terminal C |
| *2 | Terminal 50 |
| *3 | Body |
Connect the battery to the magnet starter switch as shown in the illustration. Check that the clutch pinion gear is extended.
If the clutch pinion gear does not move, replace the magnet starter switch assembly.
| *1 | Terminal C |
| *2 | Terminal 50 |
| *3 | Body |
Perform a holding test.
Disconnect the negative (-) lead from terminal C. Check that the clutch pinion gear remains extended.
If the clutch pinion gear returns inward, replace the magnet starter switch assembly.
| *1 | Terminal C |
| *2 | Terminal 50 |
| *3 | Body |
Inspect the clutch pinion gear return.
Disconnect the negative (-) lead from the switch body. Check that the clutch pinion gear returns.
If the clutch pinion gear does not return inward, replace the magnet starter switch assembly.
Perform a no-load performance test.
Connect the motor lead wire to terminal C. Make sure that the lead is not grounded.
Clamp the starter in a vise.
Note
Do not clamp the vise too tightly.
| *1 | Terminal 30 |
| *2 | Terminal 50 |
| *3 | Body |
Connect the battery and an ammeter to the starter as shown in the illustration.
Check that the starter rotates smoothly and steadily with the clutch pinion gear extended. 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 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.
| *1 | Terminal 50 |
| *2 | 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.
| *1 | Switch Body |
| *2 | 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.
INSPECT STARTER ARMATURE ASSEMBLY
| *1 | Commutator |
Check the commutator.
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.
| *1 | Armature Coil Core |
| *2 | Commutator |
Check the commutator.
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 surface for dirt and burns.
If the surface is dirty or burnt, restore it with sandpaper (No. 400) or a lathe.
| *1 | Armature shaft |
Check the commutator for circle runout.
Place the armature shaft on V-blocks.
Using a dial indicator, measure the circle 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 (1.142 in.) |
| Minimum diameter |
|---|
| 28 mm (1.102 in.) |
If the diameter is less than the minimum, replace the armature.
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 blade.
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 standard is not met, replace the starter brush holder assembly.
INSPECT STARTER CENTER BEARING CLUTCH SUB-ASSEMBLY
Inspect the gear teeth on the planetary gear, internal gear and starter clutch for wear and damage.
If damaged, replace the gear or clutch assembly. Also check the planetary gear for wear or damage.
| *a | Free |
| *b | Lock |
Check the movement of the clutch pinion gear.
Hold the starter clutch, 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.