Checking the starter on the stand (VAZ-2105)

Data for checking the starter:

• Current consumption, A, no more than:
• at maximum power - 260
• in a inhibited state - 500
• at idle - 35 (60*)

* For starter 35.3708.

To ensure the efficiency of the starter, test its electrical and mechanical characteristics on a bench. The electrical circuit for testing the starter on a bench is shown in Fig. 234. The connecting wires to the current source, ammeter and contact bolt of the starter traction relay must have a cross-section of at least 16 mm². The starter must be powered from a fully charged battery, the temperature during testing must be (25±5)°C, and the brushes must be well ground to the commutator.

Checking functionality

By closing switch 5, with the current source voltage at 12 V, make four starter activations with different braking conditions, for example, with braking torques of 0.2–0.24; 0,55—0,66; 0.9-1.08 and 1.15-1.25 kgf·m. The duration of each starter activation should be no more than 5 s, and the intervals between activations should be no less than 5 s.



The text is taken from the online resource: VAZBOOK.ru

If the starter does not rotate the stand's ring gear or its operation is accompanied by abnormal noise, then disassemble the starter and check its parts.

Full braking test

Brake the stand's toothed ring gear, turn on the starter and measure the current, voltage and braking torque, which should be no more than 500 A, no more than 6.5 V and no less than 1.4 kgf·m, respectively. The starter activation duration should be no more than 5 s.

If the braking torque is lower and the current is higher than the specified values, the reason may be an interturn short circuit in the stator and anchor windings or a short circuit of the windings to the housing. When the braking torque and consumed current are lower than the previously specified values, the reason may be oxidation and contamination of the collector, severe wear of the brushes or a decrease in the elasticity of their springs, hanging in the brush holders, loosening of the stator winding terminals, oxidation or burning of the contact bolts of the traction relay.

When the gear is fully braking, the starter anchor should not turn; if this happens, the freewheel clutch is faulty. To troubleshoot, disassemble the starter and replace the damaged parts.

Idle speed test

Remove the stand's toothed ring from engagement with the starter pinion. Turn on the starter and measure the current consumption and the rotation speed of the anchor, which should be no more than 35 A, respectively (60 A for starter 35.3708) and 5000⁺⁵⁰⁰_-800 min⁻¹ at a voltage at the starter terminals of 11.5-12 V.


If the current strength and the rotation speed of the armature shaft differ from the specified values, then the reasons may be the same as in the previous test.

Checking the traction relay

Install between the limiting ring 34 (see fig. 232) and a 12.8 mm thick gasket with a gear and turn on the relay. For a single-winding relay, check the current consumption, which should be no more than 23 A. For a two-winding relay, check the relay turn-on voltage, which should be no more than 9 V at an ambient temperature of (20±5)°C.

Mechanical data check

Check the spring pressure on the brushes with a dynamometer, which for new brushes should be 1±0.1 kgf. If the brushes are worn to a height of 12 mm, replace them, having first ground them to the collector.

The axial free play of the anchor shaft should be 0.07-0.7 mm. If it is not within this limit, disassemble the starter and select the thickness and number of adjusting washers 20 (Fig. 235).



The starter drive must move freely along the splined shaft without noticeable jamming and return from the working position to the initial position under the action of the return spring of the relay anchor. When the drive gear turns in the direction of rotation of the anchor, the latter should not rotate. The gear must rotate relative to the anchor shaft under the action of a torque of no more than 2.8 kgf cm.