10" SIP Sliding mitre saw

[neilyweely]

HELP

My saw has just started blowing sparks everywhere from the motor!
I have removed the brushes and they are very worn and have deposits all over the end, could this be the problem, or simply a symptom of the problem?

will replacing the brushes fix the problem, or should I send it in for repair?

I need the saw for work, so would have to replace if it was gonna be away for any time!

HELP

 

[OPJ]

If it's still under warranty (two-years, with SIP stuff), you should really try contacting them and see what they can do for you.

 

[neilyweely]

ok gents, great news


today, whilst on a search for some new brushes for the sip, I found a tool repair shop in BEDFORD, RENU tools, on Manton Lane Ind EST, who repair all tools, and really know their stuff.

The guy i spoke to, Derek, was a real case, who really knew his stuff, and MADE me up a couple of the brushes for nothing! And then advised me on how to fit them, and possibly make em last longer!!

so remember the name- Renu Electrical, may come in handy. They are in the book, and today WAS the first time I ever came across them, so No affiliation whatsoever! Hope I haven't upset anyone by calling their name!
sorry if I have.

Saw now works by the way; are they any good- it appears to be fairly well made, all heavy and solid and that. Someone here must have one.....

Thanks OPJ for your help

 

[George_N]

When replacing carbon brushes, especially badly worn ones, it is a good idea to "dress" the commutator (the segmented ring that the brushes contact) with a fine emery paper. If the commutator is rough it will wear the new brushes very quickly.

 

[neilyweely]

george N

fantastic mate, how the hell do I do that?
There are two plastic screw in covers that you take off and the brushes pop out (they are a pig to get back in). The brushes slot into a groove that is taillored to fit the size of the brush exactly. It looks as if I could just about fit emery paper in between the commutator (my dad called it something else, think it began with a?) and the holder on one side but it looks as if the other side is quite close to the spinning thingy. It isn't sparking as much as it was, but still a little bit. Its loud, but then they are, and other than that it seems fine. So......
Does anyone else own the 10" sliding SIP saw?

Many thanks OPJ and George.

 

[George_N]

george N

fantastic mate, how the hell do I do that?
There are two plastic screw in covers that you take off and the brushes pop out (they are a pig to get back in). The brushes slot into a groove that is taillored to fit the size of the brush exactly. It looks as if I could just about fit emery paper in between the commutator (my dad called it something else, think it began with a?) and the holder on one side but it looks as if the other side is quite close to the spinning thingy. It isn't sparking as much as it was, but still a little bit. Its loud, but then they are, and other than that it seems fine. So......
Does anyone else own the 10" sliding SIP saw?

Many thanks OPJ and George.

To be honest, I've mostly done this on washing machine motors where there is usually enough space to get access to the commutator with the emery paper wraped over the end of my finger. Hold the emery paper against the surface and turn the moter by hand; it usually only takes a few turns. You might be able to use a thin strip of wood (ice lolly stick size) instead of a finger if space is tight. This won't make it run any quieter, universal motors are noisy by nature, but it might prolong the life of the brushes. I've just been doing this on our washing machine at home. It stopped working on Saturday so I pulled out the motor and, sure enough the brushes were worn down to stumps and the wire connector in the middle of the brush had slightly scored the commutator. A new set of brushes cost less than £6 off t'internet, so hopefully a cheap fix (not got them yet).