1I
Starting motor running but too slow (small torque) (If battery and wiring are satisfactory, inspect starting motor)
Possible symptoms due to starting system trouble would be as follows:
•
Starting motor does not run (or runs slowly)
•
Starting motor runs but fails to crank engine
•
Abnormal noise is heard
Proper diagnosis must be made to determine exactly where the cause of each trouble lies.....in battery, wiring harness, (including starting motor switch), starting motor control relay (for K9K Engine), starting motor or engine.
Do not remove motor just because starting motor does not run. Check the following items and narrow down scope of possible causes.
1)
Condition of trouble
2)
Tightness of battery terminals (including ground cable connection on engine side) and starting motor terminals
3)
Discharge of battery
4)
Mounting of starting motor
For M13 Engine
| Condition |
Possible Cause |
Action |
|---|
|
Starting motor running but too slow (small torque) (If battery and wiring are satisfactory, inspect starting motor)
|
Insufficient contact of magnetic switch main contacts
|
Replace magnetic switch.
|
|
Layer short-circuit of armature
|
Replace.
|
|
Disconnected, burnt or worn commutator
|
Repair commutator or replace armature.
|
|
Worn brushes
|
Replace brush.
|
|
Weakened brush springs
|
Replace spring.
|
|
Burnt or abnormally worn end bush
|
Replace bush.
|