concrete breaker

[linga]

I have acquired an old Bosch concrete breaker. I do not know the exact model as all the identification plates are either missing or indecipherable.( and its not fallen off the back of a lorry !)
I assumed it was 110v but it runs very slowly.
The brushes seem to be fine and I cannot find any obvious reason why it runs slowly so I am wondering if it might be one of the 240 v ones that I think they made.
I presume that would make it run faster.
How do I tell and if I experiment by running on 240 v what will happen if its supposed to be 110v?

 

[Nearly]

@TripleSix

 

[br jones]

I have acquired an old Bosch concrete breaker. I do not know the exact model as all the identification plates are either missing or indecipherable.( and its not fallen off the back of a lorry !)
I assumed it was 110v but it runs very slowly.
The brushes seem to be fine and I cannot find any obvious reason why it runs slowly so I am wondering if it might be one of the 240 v ones that I think they made.
I presume that would make it run faster.
How do I tell and if I experiment by running on 240 v what will happen if its supposed to be 110v?

Pictute ,probaly a g27

 

[linga]

Pictute ,probaly a g27

 

[Hesston4860s]

Might be of no help, but we had a spurious copy looked just like that and it was 240v

 

[linga]

Might be of no help, but we had a spurious copy looked just like that and it was 240v

I am thinking it may well be 240v. If I try it with 240v and it is only 110v what will happen?

 

[harrow]

Bang.

Has it got a 120 volt plug on it ?

 

[linga]

Bang.

Has it got a 120 volt plug on it ?

Yes that’s why I thought it was 110 but am thinking that might be a distract ion

 

[Lincs Lass]

Unlikely to be 240v,,as it's got a yellow plug ,take it ad 110v ,they do run slower than 240

 

[br jones]

Its 110v

 

[linga]

Why is it running slow then

 

[steveR]

Transformer OK?

 

[linga]

Transformer OK?

Yes

 

[Ukjay]

If you are certain the brushes, transformer and motor windings are OK, then have you looked at the striker, ram and piston to make sure they are free / not binding and lubricated (greased) correctly on the striker inside the head unit?

 

[linga]

I have looked at the striker mechanism and it appears to be functioning correctly and with no binding

 

[linga]

Although there is clearly wear in the tool holder

 

[Classichay]

Is your transformer rated to a breaker we had an odd incident with a mag drill not sticking correctly down to the transformer

 

[Lincs Lass]

Although there is clearly wear in the tool holder

Grease the shank ,they get dry and bind just like smaller breakers

 

[Ukjay]

I have looked at the striker mechanism and it appears to be functioning correctly and with no binding

Are you referring to the piston etc inside the casing (strip down needed), not the tool holder mechanism, as the two are different? If you are then you may need the motor windings checked out if the transformer etc all check out as being correct and working as they are intended?

 

[Exfarmer]

You would be a brave man putting 240 volts into that unless you are absolutely certain it was intended. Their appears no earth!
make sure you have a trip on the plug!