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? Percussion drill repair the first step to open the impact drill, only need to tear down screws to open the lid can complete the operation of this step. Impact drill repair the second step of steering gear, there will be some trouble to the steps, the whole motor must dismantle bayonet apart from the shell to put the steering gear. Then rotating steering at bayonet can easily tear open come down to the steering gear. Sometimes steering will be bearing block, the carbon is extremely open can remove the steering gear. Don't remove the steering gear is usually a ring structure, by looking at the ring structure. Then you will find the cause of the failure. Third step some troubleshooting for the maintenance of impact drill is damaged, if the steering gear of a contact can be a rough estimate is the contact point in rotating spark high temperature plastic melt. Copper and copper contaminated in steering gear motor copper poor contact, if this time another contact point is good, then our judgment is right. Impact drill, maintenance of the fourth step fault after confirm the fault is caused by copper stain using appropriate tools, remove stain polished copper. The copper on the motor also USES the same method to clean. After completion of the cleaning will generally use the multimeter, measure and confirm the fault have been screen out. Impact drill repair the fifth step reassemble, reassemble need some butter on the maintenance: by the way, before repackaging is very methodical steps can't wrong, pay attention to not to make mistakes, when the gear assembly or there may be a big problem. This is the maintenance process of impact drill, the last step of the assembly is very important. Don't worry after assembled with electricity use also need to use multimeter to confirm again. Backward spinning bit look have stuck, electricity boot after everything ready. Many customers can think before buying percussion drill impact drill which trusted, and choose a cost-effective impact drill is also important to master the daily maintenance skills of impact drill, able to timely troubleshooting extend the service life of impact drill.