18:12. Starter of the diesel engine

Sequence of dismantling of a starter

1 – screw
2 – solenoid of the traction relay
3 – forward cover
4 – coupling screw
5 – screw
6 – back cover
7 – brush holder
8 – stator
9 – rotor
10 – forward bearing
11 – back bearing
12 – screw
13 – cover
14 – spring lock ring

15 – washer
16 – plate
17 – screw
18 – average holder
19 – spring support
20 – spring
21 – adjusting washers
22 cogwheel
23 – lever
24 – spring lock ring
25 – press ring
26 – small gear wheel
27 – spring
28 – shaft of a small gear wheel


Assembly of a starter is carried out to the sequences, the return dismantling.

Adjustment of a gap of a gear wheel

 PERFORMANCE ORDER

  1. Disconnect a starter engine wire from the plug "M".
  1. Additional wires connect plugs of the rechargeable battery to plugs S and M.

The following check needs to be executed during 10 with as, otherwise, the coil of the traction relay can fuse.

  1. Include ignition, at the same time the gear wheel of a starter will be pushed forward. A finger remove a gear wheel back and the probe check a gap between a gear wheel and a stopper.
  1. If the gap differs from demanded, adjust it, adding or removing laying between the traction relay and a forward cover. Gear wheel gap: 0,5–0,2 mm.

Check of the traction relay of a starter

Disconnect a starter engine wire from the plug "M". The traction relay is serviceable if the plunger is involved at connection of plugs of the rechargeable battery to the S and M plugs. If the gear wheel does not move forward, replace the traction relay.


This check needs to be executed during 10 with as, otherwise, the coil of the traction relay can fuse.

Check of the holding winding of the traction relay

Disconnect a starter engine wire from the plug "M". Additional wires connect plugs of the rechargeable battery to the S plug and the case of the traction relay and manually to a stopper extend a gear wheel. If the gear wheel remains in this situation, so the holding winding of the traction relay is serviceable.


This check needs to be executed during 10 with as, otherwise, the coil of the traction relay can fuse.

Check of return of a plunger of the traction relay

Disconnect a starter engine wire from the plug "M". Additional wires connect plugs of the rechargeable battery to the plug "M" and the case of the traction relay, at the same time the gear wheel of a starter has to be pushed forward. After a detachment of wires the gear wheel of a starter has to return to a starting position quickly.


This check needs to be executed during 10 with as, otherwise, the coil of the traction relay can fuse.

Operational tests (idling)

 PERFORMANCE ORDER

  1. For carrying out tests of idling collect the scheme shown in the drawing.
  1. Establish a rheostat cursor in such situation at which the voltmeter will show tension 11,5 B, at the same time check the current consumed by a starter and be convinced that the shaft of a starter is turned easily and smoothly. If the consumed current differs from demanded, determine by the table and remove a cause of defect.
Sign
Possible reason
The big consumed current with a low frequency of rotation of a shaft of a starter The polluted bearing
Friction of a winding of a rotor about a pole
The winding of a rotor and the coil of excitement are closed on "weight"
The rotor winding is damaged
The big consumed current in the absence of rotation of a shaft of a starter The solenoidal switch is closed on "weight"
The winding of a rotor and the coil of excitement are closed on "weight"
The bearing is jammed
There is no consumed current and the shaft of a starter does not rotate Damage of a rotor and coil of excitement
The brush is broken or the flexible conductor of a brush is torn off
The contact between a brush and a collector is broken
The small consumed current with a low frequency of rotation of a shaft of a starter Wrong connection of a winding of the coil of excitement
The big consumed current with a high frequency of rotation of a shaft of a starter Short circuit in the excitement coil