When the starter is turned on, the armature does not rotate, the traction relay does not work
Cause of malfunction | Elimination Method |
1. Faulty or completely discharged battery. | 1. Charge the battery or replace. |
2. Strongly oxidized battery terminals and wire lugs; tips loosely tightened. | 2. Clean terminals and wire lugs, tighten and lubricate with petroleum jelly. |
3. Interturn short circuit in the retracting winding of the traction relay, shorting it to «mass» or break. | 3. Replace the traction relay. |
4. Faulty starter enable relay. | 4. Clean the relay contacts. Replace defective relay. |
5. An open in the power circuit of the winding of the starter enable relay. | 5. Check the wires and their connections in the circuit between the plug «50» ignition switch and plug «86» relay. |
6. Contacts do not close «30» and «50» ignition switch. | 6. Replace the contact part of the ignition switch. |
7. Break in the power wires of the starter traction relay. | 7. Check the wires and their connections in the circuit: battery - starter relay - plug «50» traction relay. |
8. Traction relay armature sticking. | 8. Remove the relay, check the ease of movement of the armature. |
When the starter is turned on, the armature does not rotate or rotates too slowly, the traction relay trips
Cause of malfunction | Elimination Method |
1. Faulty or discharged battery. | 1. Charge the battery or replace. |
2. Pole terminals of the battery and wire lugs are oxidized; tips loosely tightened. | 2. Clean terminals and wire lugs, tighten and lubricate with petroleum jelly. |
3. The fastening of the tips of the wire connecting the power unit to the body or to the outlet «minus» battery. | 3. Tighten the wire lugs. |
4. The contact bolts of the traction relay are oxidized or the nuts for fastening the wire lugs on the contact bolts are loosened. | 4. Strip the contact bolts, tighten the wire fastening nuts. |
5. Commutator burning, brushes sticking or wear. | 5. Clean the collector, replace the brushes. |
6. Open or short circuit in the stator or armature windings. | 6. Replace stator or armature. |
7. Closing the brush holder «positive» brushes on «mass». | 7. Repair the short or replace the cover on the manifold side. |
When the starter is turned on, the traction relay is repeatedly activated and disconnected
Cause of malfunction | Elimination Method |
1. The battery is discharged. | 1. Charge the battery. |
2. A large voltage drop in the power supply circuit of the traction relay due to strong oxidation of the wire tips. | 2. Check the wires and their connections in the circuit from the battery to the plug «50» traction relay. |
3. Breakage or short circuit in the holding winding of the traction relay. | 3. Replace the traction relay. |
When the starter is turned on, the armature rotates, the flywheel does not rotate
Cause of malfunction | Elimination Method |
1. Freewheel slip. | 1. Check the starter on the stand, replace the clutch. |
2. Breakage of the clutch engagement lever or its axle jumping out. | 2. Replace the lever or reinstall its axle. |
3. Breakage of the coupling drive ring or buffer spring. | 3. Replace clutch. |
Unusual starter noise when turning the armature
Cause of malfunction | Elimination Method |
1. The starter mount is loose or its cover on the drive side is broken. | 1. Tighten the fastening nuts or repair the starter. |
2. The starter is skewed. | 2. Check up fastening of a starter. |
3. Excessive wear on bearing bushings or armature shaft journals. | 3. Replace starter. |
4. Loose fastening of the stator pole (anchor touches the pole). | 4. Tighten the pole fixing screw. |
5. Drive gear teeth or flywheel rim damaged. | 5. Replace drive or flywheel. |
6. The gear does not disengage from the flywheel: | 6. Do the following: |
- jamming of the drive lever; | - replace the lever; |
- jamming of the clutch on the splines of the armature shaft; | - clean the splines and lubricate them with engine oil; |
- the springs of the clutch or the traction relay are weakened or broken; | - replace the clutch or traction relay; |
- the retaining ring has come off the coupling hub; | - replace damaged parts; |
- jamming of the armature of the traction relay; | - replace the traction relay or eliminate jamming. |
- the contact part of the ignition switch is faulty: the contacts do not open «30» and «50». | - check the correct closure of the contacts at different key positions; replace the defective contact part. |