Bosch GWS 14-125 CI - How to undress

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Bosch GWS 14-125 CI - How to undress

ko�odziej25 8178 14

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#1

ko�odziej25 ko�odziej25

Level 10

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#1 27 Apr 2017 12:00

I have a problem namely I can't split this grinder and I don't know what I'm doing wrong, and I want to replace all bearings because they have looseness.
Maybe someone will advise me because I have no idea. On YouTube, the guy after unscrewing easily pulled out the rotor at this stage, and for me it is not possible.
#2

stanislaw1954 stanislaw1954

Level 43

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#2 27 Apr 2017 12:23

There is a nut on the rotor axis.
#3

ko�odziej25 ko�odziej25

Level 10

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#3 27 Apr 2017 15:02

Yes, I know, but it can't be unscrewed. See this video when it's possible
http://www.youtube.com/watch?v=AgPeabGC3Lg
#4

stanislaw1954 stanislaw1954

Level 43

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#4 27 Apr 2017 15:29

ko�odziej25 wrote:
it is not possible for me.
It looks like your rear bearing is stuck in the housing, if you followed the film, you removed the brushes and you can't slide the rotor out. Try to tap the housing with a hammer, or hitting it on the edge of the table, of course, so that it does not break. Unscrewing the nut mentioned in # 2 may succeed if you locked the rotor, e.g. in the place of the brushes, but it may damage the commutator. Unfortunately, then you will only get access to the bearing at the head.
#5

teskot teskot

Level 34

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#5 27 Apr 2017 15:47

Yesterday I was repairing a very similar grinder. I could not slide the rotor out of the stator even though the rear bearing could be extended. The problem was the deformed plastic of the stator carcass, which blocked the rotor when trying to eject. The tug helped, the stator coils luckily did not suffer, although the distal later had to be stiffened in the place of damage.
#6

qadam12 qadam12

Company Account
Level 27

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#6 27 Apr 2017 16:55

Typically done not to repair.
#7

ko�odziej25 ko�odziej25

Level 10

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#7 27 Apr 2017 17:41

thank you, I can see that it will be similar to me: /
#8

Topolski Miros�aw Topolski Miros�aw

Moderator of Electrical engineering

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#8 27 Apr 2017 18:27

qadam12 wrote:
Typically done not to repair.

I would not blame the manufacturer here (unless it's Chinese on poor materials) and the user for overloading the equipment or still working on the damaged one.
#9

BANANvanDYK BANANvanDYK

Level 39

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#9 27 Apr 2017 19:01

ko�odziej25 wrote:
and I want to replace all bearings because they have looseness.

I am sorry, but this is not feasible on these Bosch models.
Unscrewing the gears only with an impact wrench, and photo on a hydraulic press.
If you have a speed controller / soft starter, you have a magnetic ring at the end of the rotor that needs to be replaced when the bearing is replaced.
In principle, if the rotor is damaged, its price and repair at an authorized service point is unprofitable - at the same price you will buy a new grinder.
It only pays to change the stator and brushes.

And in terms of split - you have to undermine something between the aluminum head body and the plastic engine housing. It can hold the rubber that is applied to the bearing at the end of the impeller.
#11

ko�odziej25 ko�odziej25

Level 10

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#11 28 Apr 2017 15:18

TomekB123 wrote:

ko�odziej25 wrote:
I have a problem, namely I can not halve this grinder and I do not know what I am doing wrong, and I want to replace all the bearings because they have play.
Maybe someone will advise because I have no idea anymore. On YouTube, the guy after unscrewing easily pulled the rotor at this stage, and for me it is not possible.

If you cannot pull out the rotor, then, as colleagues have said before, you have an overheated stator.

I assume you have at least a vice.
In it, grab the grinder firmly by the aluminum head so that you can hit the plastic body with a hammer. So you have it in a vice. You turn the body slightly so that you have a pounding edge and hit it with a hammer through e.g. a piece of wood.

You have to see if the wires get tense when knocking out. If the stator is strongly welded, you will have to disconnect all cables from the electronics and brush holders so that the rotor comes out of the body together with the stator.

Of course, the nut on the rotor is unscrewed with an open-end wrench, not an impact wrench.

If you do not damage the magnet, it does not need to be replaced after each disassembly. It is removed together with the placenta.

The bearing in the bearing flange is non-replaceable (sealed in plastic). It is completely replaced. At least a hand press is required to pull the wheel off.

Generally, without the press, don't do it.

NO, finally, a specific hint, not hitting posts that will not be commented on by he he
Now I know why I had jumps in speed while working :P

The only question is whether to buy enough to buy a repair kit 813?

Everything from the collar came out: /

Of course a thumbs up for the TomekB123 THX!
#12

wojtek 9007 wojtek 9007

Level 38

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#12 28 Apr 2017 15:32

Hello - repair kit 813 - i.e.;
https://serwis.specmajster.pl/product-pol-459...CIE-ZESPOL-NAPRAWCZY-nr-813-Kod-1-607-000-378. html
#13

TomekB123 TomekB123

Level 19

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#13 28 Apr 2017 16:11

Check that the bearing seat is not rendered.
#14

robokop robokop

Moderator of Cars

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#14 28 Apr 2017 16:15

I would consider - just in case - buying a rotor right away. This one not only has a filed, worn out commutator, it can still be seen on the "iron" traces of rubbing against the stator. It may turn out that it will die in a short time. It's so from practice.
#15

ko�odziej25 ko�odziej25

Level 10

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#15 29 Apr 2017 09:08

I close and thank you all for quick help

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TomekB123 · Accepted Answer · 2017-04-27T20:31:55+02:00

ko�odziej25 wrote:
I have a problem namely I can't split this grinder and I don't know what I'm doing wrong, and I want to replace all bearings because they have looseness.
Maybe someone will advise me because I have no idea. On YouTube, the guy after unscrewing easily pulled out the rotor at this stage, and for me it is not possible.

If you can't pull the rotor out, as colleagues have said before, you have an overheated stator.

I assume you have a vise.
Hold the grinder firmly by the aluminum head so that you can hit the plastic body with the hammer. So you have it in a vice. You twist the body slightly so that you have a pounding edge and bang with a hammer through e.g. a wood.

You have to watch if the wires do not strain when knocking out. If the stator is badly welded, you will have to disconnect all cables from the electronics and brush holders so that the rotor comes out of the body together with the stator.

Of course, the nut on the rotor is unscrewed with a wrench, not an impact wrench.

If you do not damage the magnet, you do not need to replace it after each disassembly. It is pulled off together with the placenta.

The bearing in the bearing flange is not replaceable (encapsulated in plastic). It is replaced in full. You need at least a hand press to pull the wheel.

In general, don't go without it without the press.