How To Repair Electric Motor Brushes

Choose from our selection of motor brushes including carbon brushes carbon brush assortments and more.

How to repair electric motor brushes. Many of the parts in an electric motor are effectively non serviceable as a do it yourself task such as the windings but you can replace the brushes that make contact with the armature. Replace any worn brushes and weak brush springs. The only user serviceable parts on an ac motor are the brushes and the bearings. However cramolin aerosol is an approved contact cleaner and lubricant.

You need to find out what carbon brushes your motor takes and then you need to buy them. Many are self lubricating and only occasionally require the oil wells to be topped up. Carbon brushes can wear out and they are replaceable. Electric motor test repair guide.

Often motors only need a cheap 2 part to be working as good as new. Electric motors run maintenance free most of the time. Ac motors are generally reliable and last a long time before needing to be replaced. All electric motors contain copper windings on the armature and magnets that are fixed to the outer casing.

This article describes a c electrical motor troubleshooting. Check brush springs to ensure that pressure applied to brushes is uniform and sufficient to hold brushes firmly against commutator. You can service wiring connections bearings and brushes yourself. If the internal windings burn out your ac motor needs to be checked out professionally.

You can google your appliance and see if you can find the carbon brushes for your particular motor there or you can call an appliance repair shop with the make and model of your appliance and have them look it up for you. If you don t have it use nothing else on the commutator other than an electrical contact cleaner. Here we provide an electric motor diagnostic table a troubleshooting guide that helps diagnose and repair most electric motor problems for motors found on hvac equipment in buildings such as air conditioners furnace or air handler blower fans oil burner motors well pumps and condensate return. The ones i used cost only 1 29 fo.

By breaking in the motor properly you can extend brush life by at least 30. Small electric motor repair by josh weber updated july 21 2017. Conduct a field coil check. Electricity is passed to the windings in the armature via carbon brushes.

Make sure that motor brushes never come in contact with oil or any other contaminant.