Makita drill repair

[Muncher]

This is probably one for those slightly electronically minded (or at least those who have pulled power tools apart!).

My Makita 2470T SDS drill has taken an awful lot of abuse over the last 3 years and I've certainly had my money's worth from it. Last weekend I noticed a few sparks coming from the motor assembly and it started to make an odd noise and was distinctly down on power.

The brushes have worn 3mm, down from 16mm and there is a bit of wear on the armature, but I've no idea if it's significant or not. I spoke to the Makita repair centre and they said it was probably the armature but they also asked whether I had it serviced before (my car has barely been serviced in that time!). They said they would do a free quote to repair it and it would be about £50. The problem is if that is plus VAT and I have to pay to post it there and then they charge to ship it back I'm not far off the cost of buying a new one.

It seems a shame to bin it so the other option is buying a new armature for £25. The question is from the looks of this, does it need it?

[Muncher]

I do need the interchangeable chuck unfortunately. I will buy a new armature and stick that in and see if it fixes it I think.

[Muncher]

I replaced the brushes in all my drills and impact drivers, but the SDS drill is still doing the same think, sparks and an odd noise, so I will replace the armature.

[Muncher]

Replaced the armature for about £30 and it works perfectly now

[Muncher]

singlecoil said:

I hadn't realised this was a rush job. Could it not have waited a few more months?

I bought the armature back in March but hadn't got round to swapping it as I didn't need the drill and had loads of other things on.

[Muncher]

Looks like the armature has failed again after a heavy session of using a box cutter in dense block.