Starter 4216.3708-02: 1 - front cover; 2 - axis of the drive lever; 3 - body; 4 - starter traction relay; 5 - output "50" traction relay; 6 - contact bolt; 7 - rear starter cover
The starter consists of a housing with excitation windings, an armature with a drive gear and an overrunning clutch, two covers and a traction electromagnetic relay. The covers and the starter housing are pulled together into a single whole by two studs passing inside. The studs are isolated from the stator windings by plastic tubes. A partition with a rubber sealing ring is installed between the front cover and the body.
Technical characteristics of the starter 4216.3708-02:
Rated voltage, V | 12 |
Rated power, kW | 1,65 |
Starting power, not less than, kW | 1,05 |
Starting current in the inhibited state, A | 600 |
Idle current, A | 85 |
Weight, kg | 7,2 |
Direction of rotation | right |
Working mode | short-term, with a duration of not more than 10 s |
Four poles with field windings mounted on them are fixed with screws inside the case (coils). Through two coils connected in series with the armature winding, the main current flows, consumed by the starter and depending on the load. Two other coils are connected in series and connected in a circuit parallel to the armature. This connection of the coils provides an optimal idle speed without loads. The armature shaft rotates in two bronze-graphite bushings pressed into the starter covers. The armature consists of a shaft, a core with a winding and a collector. At the front end of the shaft, a drive gear is installed, rigidly connected to the overrunning roller clutch hub and the drive ring. The movement of the gear on the shaft is limited by the ring. On the inner surface of the hub, screw splines are made, which engage with the screw splines of the shaft. The bushings installed at the ends of the fork of the drive lever enter the groove of the drive ring. The other end of the lever rests on the rod of an electromagnetic traction relay, fixed to the front cover with three screws.
In the back cover there is a brush holder with two insulated from the body (positive) and two closed to the body (negative) brushes. The leads of the coils connected in series with the armature are attached to the positive brushes. The negative brushes are connected to "weight", the output of the coils parallel to the armature is connected to one of the brushes. The brushes are pressed against the armature collector by springs.
Starter parts 4216.3708-02: 1 - front cover; 2 - sealant; 3 - overrunning clutch with drive gear; 4 - drive lever; 5 - partition; 6 - tie rod; 7 - stock; 8 - starter traction relay; 9 - adjusting washers; 10 - casing of the armature shaft; 11 - lock washer; 12 - back cover of the starter; 13 - brush holder; 14 - housing with a stator; 15 - starter anchor; 16 - axis of the drive lever; 17 - retaining ring; 18 - sealing ring; 19 - restrictive ring of the gear stroke
Traction relay the starter is connected through a relay located in the engine compartment on the right mudguard (in the variant version of the car, the starter enable relay may be absent).
The traction relay is used to engage the starter drive gear with the flywheel ring and to close the power circuit of the armature and stator windings. Contact bolts are installed in the relay cover. One bolt is connected by wire to the positive battery terminal, and the other to the stator and relay windings. When the ignition key is turned to position II ("starter"), voltage is applied to the output "50" traction relay covers. In this case, the resulting magnetic field draws the armature. The contact plate closes the contact bolts, and the rod acts on the drive lever. The lever, moving the drive gear, engages it with the ring gear of the engine flywheel. The stator and armature supply current flows through the closed relay contacts. As a result of the interaction of magnetic fields, the starter armature begins to rotate together with the hub and the outer ring of the overrunning clutch. In this case, the overrunning clutch rollers are wedged between the outer and inner rings of the clutch. Torque from the armature shaft is transmitted through the clutch and drive gear to the flywheel crown. After starting the engine, the speed of the gear begins to exceed the speed of the starter armature shaft. The clutch rollers are wedged and the torque from the flywheel is not transmitted to the starter armature shaft. When the key is returned to position I ("ignition") the power supply circuit of the windings of the traction relay opens and, under the action of the return spring of the relay, the armature returns to its original position, opening the contacts and disengaging the drive gear.
Starter Wiring Diagram: 1 - generator; 2 - battery; 3 - starter; 4 - relay; 5 - mounting block; 6 - ignition switch
Starter 5722.3708 is installed on some cars. Starter designs are similar, but unlike starter 4216.3708-02, starter 5722.3708 has a planetary gear to transmit torque from the armature to the drive gear.