Table of contents: 21. The starter does not rotate ↓ 22. The starter rotates slowly and… ↓ 23. The starter "grabs", but only… ↓ 24. The starter gear does not… ↓ 25. The starter continues to operate… ↓ 26. The starter's operation is… ↓
Attention: The electrical wiring terminals must be securely fastened and not oxidized!
1. If the starter does not turn, first of all you should make sure that the required voltage is present (minimum 10 V) at terminal 50 of the traction relay. If the test results are negative, assess the condition of the electrical wiring.
2. To check the starter's operation at full battery voltage, without engaging gears, turn on the ignition and short-circuit terminals 30 and 50 of the starter with a wire with a cross-section of at least 4 mm². If the starter now works perfectly, the cause of the malfunction should be sought in the condition of its wiring/terminals, otherwise remove the starter and deliver it to a service station for testing on a stand.
21. The starter does not rotate
1. The battery is low.
2. Short-circuit terminals 30 and 50 of the starter: if the starter rotates, check the wire 50 connected to the ignition switch for a break, also assess the condition of the starter switch.
3. The ground wire is broken, or the quality of its terminal connection is poor, the battery is discharged.
4. There is a weakening of the current strength due to poor quality or oxidation of the contact connections.
5. There is no voltage at terminal 50 of the traction relay as a result of a break in the electrical wiring or damage to the starter switch.
6. The ignition switch is faulty.
7. The relay or starter motor is faulty.
8. The starter circuit breaker switch is faulty.
22. The starter rotates slowly and does not turn the crankshaft
Please also refer to Section 1.
1. The battery is low.
2. The engine is filled with oil that is too thick for the current weather conditions.
3. The electrical wiring connectors are loose or oxidized.
4. Carbon brushes do not fit tightly against the collector, are jammed in the guides, are worn out, broken, oily or dirty.
5. The distance between the brushes and the commutator is insufficient.
6. There are grooves on the collector, the collector is burnt or oily.
7. No voltage at terminal 50 (minimum 8 V).
8. The bearing is broken.
9. The traction relay is faulty.
10. There is internal mechanical damage to the starter.
11. The starter overrunning clutch is slipping, or the flywheel ring gear is damaged.
23. The starter "grabs", but only provides "jerky" cranking of the engine
1. The gear drive is faulty.
2. The gear is dirty.
3. The flywheel ring gear is damaged.
24. The starter gear does not disengage from the flywheel/drive disk ring gear
1. The gear drive components are dirty or damaged.
2. The traction relay is faulty.
3. The starter drive thrust spring has weakened.
25. The starter continues to operate after the ignition switch is released
1. The traction relay is jammed - immediately turn off the ignition and replace the traction relay.
2. The ignition switch is faulty.
3. The starter mounting elements have become loose.
4. The starter drive assembly components are worn out.
5. The return spring of the starter drive assembly has weakened or come off.
26. The starter's operation is accompanied by a high-frequency squeal
1. If the squealing noise appears during cranking and disappears after the engine starts, the engagement gap between the starter gear and the flywheel ring gear is excessive.
2. If the squealing noise appears after starting the engine, the engagement gap between the starter gear and the flywheel ring gear is insufficient.