Contents: Adjusting the axial clearance of the…⇓ Checking the pull-in winding of the…⇓ Checking the holding winding of the…⇓ Checking the return of the traction…⇓ Idle test ⇓
Adjusting the axial clearance of the drive gear
1. Disconnect the stator winding wire from the "M" terminal of the traction relay.
2. Connect the wires from the 12 V terminals of the battery (via the switch) to the terminals "S" (+) and "M" (-) of the traction relay.
3. Set the switch to the "ON" position, which will cause the starter pinion to move forward as far as it will go.
Note: This test must be performed quickly, no more than 10 seconds, to prevent burnout of the starter winding.
4. Using a feeler gauge, measure the axial clearance between the drive gear and the limit ring.
- Nominal clearance: 0.5-2.0 mm
5. If the axial clearance is not within the nominal range, adjust it by installing or removing adjusting shims between the traction relay and the front starter bracket.
Checking the pull-in winding of the traction relay
1. Disconnect the stator winding wire from the "M" terminal of the traction relay.
2. Connect the wires from the 12V terminals of the battery to the terminals "S" (+) and "M" (-) of the traction relay.
Note: This test must be performed quickly, no more than 10 seconds, to prevent burnout of the starter winding.
3. If the drive pinion extends, the pull-in winding of the traction relay is in good condition. If the drive pinion does not extend, replace the traction relay.
Checking the holding winding of the traction relay
1. Disconnect the stator winding wire from the "M" terminal of the traction relay.
2. Connect the wires from the 12V battery terminals to the "S" (+) terminal and the starter housing.
Note: This test must be performed quickly, no more than 10 seconds, to prevent burnout of the starter winding.
3. If the drive pinion, manually pulled out to the stop, remains in the extended position, then the holding winding is in good condition. If the pinion retracts, then there is a break in the holding winding. In this case, replace the traction relay.
Checking the return of the traction relay anchor
1. Disconnect the stator winding wire from the "M" terminal of the traction relay.
2. Connect the wires from the 12 V terminals of the battery to the "M" terminal and the starter housing.
Note: This test must be performed quickly, no more than 10 seconds, to prevent burnout of the starter winding.
3. Pull the pinion out by hand and release it. If the pinion immediately returns to its original position, the traction relay is OK. If not, replace the traction relay.
Idle test
1. Assemble the unloaded test circuit as shown in the figure.
2. Using a rheostat, adjust the battery voltage so that the voltmeter shows 11 V. Check that the maximum current consumption corresponds to the nominal value, and that the starter armature rotates freely, without jerking or jamming.
- Nominal current (not more than): 90 A
- Nominal speed (minimum): 3000 rpm
