Makita grinder running slow - TilersForums.com

[Dumbo]

My Makita 18v battery grinder is running half speed ( approximately . I havent measured the rpm ) is this likely to be brushes or something more terminal . Went to check the brushes by removing and inner and outer cap but couldn't do it . Any advice would be appreciated

 

[Sean Kelly]

The outer cap is probably covered in adhesive!! Just use a screwdriver and they will pop off.

The inner ones are threaded. If I remember correctly they have a slot in the middle of them so that you can get a flat head screwdriver and turn them. Failing that use a thin nosed set of pliers to give them a good turn.

Take out the brushes, again by prising them out with a screwdriver.

The slowness of your grinder is probably the worn brushes!

 

[Italy]

they may not be the brushes,
lately the brushes have a copper wire inside,
when the copper touches the winder, the block is immediate.
the grinder no longer works

 

[One Day]

Aren't they brushless?

 

[Dumbo]

Aren't they brushless?

Not if you're a cheapskate like me and buy the cheaper version

 

[Dumbo]

It wasnt that bad

About 15min and £11 later its fixed .
Spoke to a local tool guy he reckoned
£30 Labour and about £30 bits .
All parts I used genuine Makita from local builders merchant . At £30 Labour I reckon £120 an hour , nice work if you can get it .

 

[Spare Tool]

Jesus, you could do with a can of air duster....compressed air in a can

 

[One Day]

Covered in adhesive too!

 

[Dumbo]

Jesus, you could do with a can of air duster....compressed air in a can

Why

Covered in adhesive too!

And dont know what youre on about its clean

 

[Spare Tool]

Why

And dont know what youre on about its clean

Its caked in sh#Te no wonder it was crying out for attention

 

[Dumbo]

Its caked in sh#Te no wonder it was crying out for attention

Does that mean the rest of my tools are going to brake .

 

[Spare Tool]

Would probably last a bit longer with some tlc...no offence just my tool ocd

 

[One Day]

I always give my tools a clean after use.
You know what they say : Look after your tools - and you'll be late home to an angry wife...

(but at least your tools will be clean!)