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Does anyone know how to check the inter-turn short circuit in the starter?

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There is only a multimeter ...

I took off the starter 10 times, checked everything in general, there was only an inter-turn circuit in the stator. The stator is made of a copper bus, only 3 coils, but can these turns be short-circuited? And how to check?



DIAGRAM



1 - starter cover on the drive side;
2 - rubber plug;
3 - drive lever;
4 - traction relay;
5 - stator pole;
6 - service coil of the stator winding;
7 - shunt coil of the stator winding;
8 - rubber plug;
9 - a protective tape;
10 - cover sleeve;
11 - a cover from outside a collector;
12 - brush;
13 - brush spring;
14 - a brake disk of a cover;
15 - case;
16 - coupling pin;
17 - anchor;
18 - gear stroke limiter;
19 - freewheel clutch with gear drive;
20 - a restrictive ring;
21 - thrust washer;
22 - an adjusting washer
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24 commentary
Author +2
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Found a problem !!)) Now it turns like a jet, as much as the motor pulls out.

The collector clogged with graphite, cracks formed between the plates and filled graphite dust from the brushes. He cleaned the collector, washed with acetone. The grooves were glued with epoxy, polished the collector. Everything is super!
Author 0
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And, in this regard, I’ll check, although it is very unlikely, it worked fine before, nothing has changed. Yes, and there will be a little friction for such a strong braking.
Guest Anatoly 0
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Not about the starter housing, but about the flywheel. Flies too far at launch.
0
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Alcoholic in the right place ...
Oooh ... very thin! smile
Author 0
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there is no friction of the bendix on the starter housing, without load the starter works without extraneous noise, high revs.

Yes, the problem was most likely in a clogged with graphite collector.I cleaned it, missed the grooves with epoxy, tomorrow I will check the ground and check.
Guest Anatoly 0
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The problem is at 21 22, the result of 19 is braking about the flywheel and does not pull the engine. There is nothing to do with chains.
Author 0
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Yes, everything is correct, this is a one-piece design ... Each collector contact rings with all the others
Author 0
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The chance of an inter-turn circuit in the anchor is 1 to 1000 in my opinion ... I took off the protective cartons from the front and back, there was thick cardboard between the copper tires, nothing stuck anywhere and didn’t break through.
In the upper part, even though the varnish peeled off (starter from the times of the USSR), there are gaps, nowhere in contact with anything. The only thing that is not visible is in the core itself, but there the bus passes through insulating thick tubes, it doesn’t close there in any way ...

Not one collector contact breaks to ground.






And why did everyone take it and close it all at once? Rave. The starter works, how would it work if everything was closed? I don’t understand anything ...
0
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The anchor is made in a peculiar way. A thick bare wire or rectangular bus bar is laid in the grooves with insulation. The number of "windings" is equal to half the number of lamellas. Between themselves U-shaped conductors are not connected. Lamellas should be called only in pairs. 4 graphite brushes are pressed to the collector. Two brushes are connected to the housing, two to the stator windings. As a rule, sequential excitation is used in stators. This is to increase torque. That is why the starter can not be twisted for a long time.
0
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Do not wash the winding with acetone! There, the lacquer insulation is destroyed. And the hedgehogs still with temperature then Karachun - KZ.
Alcoholic in the right place ...
Author 0
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That is, it is all closed inter-turn? This is how it could happen.

The gaps between the collector petals were clogged with graphite, I thought he was short. I picked everything out, washed it with acetone, it did not help.
+1
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Contacts in the anchor should be called in pairs.
Author 0
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How should and should not the starter collector ring? At me it all rings like a solid construction. That is, every contact calls with everyone else.
But how does it work then? I thought in the anchor there are only separate coils ...
Author 0
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Well look 1.27, the anchor rubs the stator



How can bushings be wedged? I don’t understand, they are not new. Yes, and dope there oh her, at idle because buzzing without problems

I also found an interesting thought, and probably the point is ... Contacts on the collector are clogged. Previously, I had problems with him .... Exactly there it is ...
Author 0
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yes, interesting, check, thanks
+1
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Quote: Dmitrij
When the bushings wear, the anchor scrapes along the stator

I have never seen such a thing. When worn, the anchor simply wedges in the bushings and it brakes.
Check bushings. I am sure they already have the shape of an ellipse.
Author 0
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Well, let's get clear thoughts about where and what, not shamans right there))
0
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Dim, we can load where added. One activist bought a new car, but it does not pull ... The brake (handbrake) was not adjusted ... It is not tightened up, it is not locked
Author 0
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I just don’t believe that the short circuit is in the stator, there is a thick busbar made of copper, it is varnished, an insulator between the turns (in theory).
Author 0
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When the bushings wear, the anchor scrapes along the stator. At idle, it rotates like an airplane, it does not scrape anything, there are no chips, there are no signs of friction.
Yes and there is no beating in the eye, the gaps are minimal.
0
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With these symptoms, the bushings must be replaced (No. 10 in the figure, the second in the figure is not shown, but is located in the starter cover on the drive side), in which the armature rotates. After installing new bushings, they need to be bored to the required diameter using a reamer. And there will be happiness :)
+1
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No, inappropriately from electrolysis cells - you’ll burn.It is necessary to break the power supply and measure the current consumption when turned on. And look at the oscillator (or through the input of the Audio Card) the creeping (on coils). The idea of ​​isolating the stator coil (which can be short)
Author 0
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gaps where? Everything is clean, nothing is stuck. No one was riding ...

The idea came through some powerful thread or "electrolyzer" to apply current from the welding inverter to the stator and a screwdriver to "feel" the attractive force of each coil. In, for sure, I’ll do so ... Would not burn smile

and the temperature is yes ... it’s still contagious from the collector and the outlet pipes so that you can’t hold it in your hands
0
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Dima, does the collector have any gaps? Or stuck up?
If there is, then clean (and insulate)
Inter-turn may be, maybe, the temperature there jumps during operation.
And designed (usually) for short-term work, and you are katalsi

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