5ab14532

16:10. Starter

Starter 35.3708 assembled

1 – a cover from the drive;
2 – lock ring;
3 – restrictive ring;
4 – drive gear wheel;
5 – obgonny coupling;
6 – flood ring;
7 – rubber cap;
8 – drive lever;
9 – relay anchor;
10 – the holding winding of the traction relay;
11 – the involving winding of the traction relay;
12 – coupling bolt of the relay;
13 – contact plate;

14 – relay cover;
15 – contact bolts;
16 – collector;
17 – brush;
18 – anchor shaft plug;
19 – a cover from a collector;
20 – casing;
21 – shuntovy coil of a winding of the stator;
22 – case;
23 – screw of fastening of a pole of the stator;
24 – anchor;
25 – anchor winding;
26 – intermediate ring.

Scheme of connections of a starter

1 – generator;
2 – rechargeable battery;
3 – starter;

4 – ignition switch;
P1 – the involving winding of the traction relay;
P2 – the holding winding of the traction relay.

Starter – the quadripolar four-brush electric motor of a direct current with the mixed excitement, with the device for connection and separation of a gear wheel of the drive of a starter with a gear wreath of a flywheel. The starter joins the electromagnetic traction relay with remote control.

The starter is attached by three bolts to a coupling case on the right side of the engine. From the warmed reception of a pipe of final system it is protected by a heat-insulating guard.

Technical characteristic of a starter 35.3708 * (ST – 221)

Rated voltage, In

12
Rated power, kW
1,3
The consumed current at the maximum power, no more, And
290 (260 **)
The consumed current in the slowed-down state, no more, And
550 (500 **)
The consumed current in the idling mode, no more, And
60 (35 **)

* With a face collector.
** For a starter of ST – 221.

The case and covers of a starter are pulled together with two bolts. In forward and back covers bronze-and-graphite bearings (plugs) in which the anchor shaft rotates are installed.

The torque from a shaft of an anchor is transferred to a flywheel of a bent shaft of the engine via the starter drive.

The traction relay serves for input of a gear wheel of the drive in gearing with a gear wreath of a flywheel and inclusion of power supply of the electric motor of a starter. At turn of the ignition key in situation "starter" tension moves on both windings of the traction relay (involving and holding). After short circuit of contacts of the traction relay the involving winding is disconnected.

On a shaft of the drive the roller coupling of a free wheeling (the obgonny coupling) with a driving gear wheel is installed. It transfers torque only in one direction – from a starter to the engine, separating them after launch of the engine. It is necessary for protection of a starter against damage because of the excessive frequency of rotation.

We determine serviceability of the drive by external survey after dismantling of a starter. We check the stator, a rotor and the traction relay for short circuit and break of windings. The faulty element is replaced assembled. External survey we check a condition of a collector and brushes – we replace the worn-out brushes, we wipe a greasy collector with white spirit, solvent or gasoline.