Six steps for micro motor repair

To extend the service life of the micro motor and operational safety, routine maintenance work is essential, today we will introduce the six steps of micro motor maintenance

1. Cleaning

To remove corrosive and sticky substances from the motor surface, use anti-scaling agents and soap if necessary.

2. Disassembly

Insert a thin blunt instrument between the housing and the gear and pull out the drive gear. You can use a flat head screwdriver to remove the clips that hold the housing in place. While you grasp the armature and remove it from the motor, place the drive shaft on the table. It will move to one side as it separates into its own components.

3. Dusting and Inspection

Use a disposable paper towel or cotton cloth to check that the brushes are intact and replace them immediately if they show signs of wear. If necessary, clean the commutator, armature and shaft assembly with solvent. It is important to maintain a shiny, smooth bearing surface. The spine of the commutator is smooth and each component is distinct from the others. The thrust ring, the small brass ring on the right side of the armature, keeps the armature out of contact with the motor housing. There should not be any visible signs of burned or broken windings or wires.

4. Repair 

Moving the backplate brush holder mounted on the slotted plate is very easy as it is an obvious component. Simply place your thumb on the connector to push it in place. It may be necessary to use a screwdriver or razor blade during this step. Once again, clean the back panel with the brush carrier, cut the insulation short with the wire, and bend the cut end at a right angle. After prying the brush away from the carrier, push the cut wire up into the placement slot. Trim the wire after wrapping it around the bottom side of the brush carrier.

5. Assembly

Put a drop of clear oil on the front bearing and clamp the armature to the commutator assembly through the commutator. Then, reinsert it into the chassis. Because the magnetic field will use it to turn, the parts need to be firmly clamped. If the motor has carbon brushes, but no lubricated commutator, then apply some petroleum jelly in small amounts. Without using more force than is placed on the touch screen, place the rear bearing on top of the V formed by the brushes and push it in until it touches the back of the chassis. At this point, the commutator should just enter the brushes. Align the shaft with the rear bearing and push it together. Once the shaft can be seen in the hole and the back plate has engaged the chassis.

6. Test

Test the motor to make sure it will run as intended. If the motor still does not start, repeat the method a second time.

These are the six steps of micro motor repair, if you have other doubts, please feel free to consult us