Impact drill is decorated in the home more common a tool, is often used to punch on wall, board and floor etc. A cost-effective impact drill as often decorate teacher indispensable tool of the kit. Impact drill use longer may appear completely doesn't work. How do we for repair this time? Here small make up to introduce some common fault maintenance methods of impact drill. Fault phenomenon causes a repair method, after electrify motor does not turn the power cord to break. Switch is damaged or poor contact. Brush and commutator poor contact. Stator winding circuit. The armature winding circuit. Bearing severe lack of oil, shaft rust. Multimeter is detected, repair or replace the power cord. Use a multimeter to check, repair or replace the switch. Grinding the commutator surface or change the brush. Find out the fault point, repair or replace the winding. Find out the fault point, repair or replace the winding. Remove rust, appropriate to add lubricating oil. Second, the motor speed significantly slow the armature winding local short circuit. Short circuit or stator winding grounding. Bearing severe wear. Brush is not neutral position. Short circuit between the commutator. Find out the fault point, repair or replace the winding. Find out the fault point, repair or replace the winding. Change the bearing. Brush will be dispatched to the neutral position. Between the commutation of the toner or metal scrap out clean. Three, under the brush spark armature winding short circuit or open circuit. Brush and commutator poor contact. Brush type or size doesn't fit. Brush the pressure is not appropriate. The commutator surface is not smooth, rounded or not have oil. Find out the fault point, repair or replace the winding. Grinding the commutator surface or change the brush. Replace the right brush. Adjust the brush for pressure. ~。 MPa。 Clean up or grinding the commutator surface. Fourth, the motor temperature rise too high armature winding short circuit. The armature and stator. Bearing severe lack of oil. No load, overload or timeout. Find out the fault point, repair or replace the winding. Straightening shaft or replace bearing. Add lubricating oil. Use as stipulated in the specification. Five, the motor noise is too big brush too much pressure. The brush is too hard. Bearing oil shortage or wear. Commutator is uneven. Adjust the spring pressure. Change the brush. Add lubricating oil or replace bearing. Grinding the commutator surface.
