Carbon Brushes are blamed for nearly all electric motor failures but other causes should be considered.
· Did the machine just stop.?
· Always check the power supply first. Unplug the tool and plug something else into the socket and see if it works.
· If that appliance works then you may as well check the fuse in the power tools plug ( The fuse is rarely the problem) If you have a tester then check the fuse if not swop the fuse with a fuse of a similar power from another working appliance. IMPORTANT If the power tool briefly starts and then stops and the fuse has blown again then you probably have a serious fault such total motor failure, cable short or other major electrical failure. These types of electrical failure can be DANGEROUS. DO NOT REPLACE THE FUSE AGAIN.
· Please give us a phone or find a local Power Tool repair agent to check the power tool over. If you don’t know one we can arrange to collect the power tool from you.
· If replacing the fuse made no difference then unplug the tool and if the motor has easy access to the brushes then take a look. You are looking for two brush caps and if you are lucky they will be visible on the outside of the tool. Normally they are black with a slot in them If you find one then the other one will always be opposite. Be gentle with the brush caps they can be brittle. Find the largest screwdriver that will fit the slot and before undoing give a slight twist clockwise (and I mean slight) now undo anti clockwise.
· Look at the carbon brush for a small round pin sticking out from the front of the brush face ( the bit touching the armature) if you find one then you probably only need brushes.
· Not all carbon brushes have a cut out built in but by looking at the carbon brushes we can tell a lot. If one brush is more worn than the other and maybe almost worn out is a good sign. You will probably only need brushes. If both brushes are still long enough to touch the armature then it is probably not the Carbon Brushes.