How to repair a handheld electric drill

The most common problem with handheld electric drills are a result of is dirt, dust and grime. The most common effect is the copper connections on the armature get coated and stop conducting properly.

Requirements
screw driver
 * sand paper
 * rag

Steps

 * Taking apart:
 * 1) Remove the 3 back screws and take off back cover
 * 2) Remove the trigger but pushing the unlock button
 * You do not need to remove the brushes
 * 1) Remove the internal screw
 * 2) remove the front of the drill
 * 3) carefully remove the armature, and any cover that may be in front of it.
 * Figure 1 shows a various part locations for a Craftsman drill




 * To Clean it:
 * 1) Take apart the drill (carefully)
 * 2) remove the armature
 * 3) Sand the copper so it shiny and smooth.
 * 4) clean, remove any copper filings
 * 5) Clean the rest of the drill the best you can
 * Note the gear box is supposed to have grease in it, so if its not giving you problems don't clean it.
 * Figure 2 shows a clean copper conductor on the armature of a Craftsman drill.


 * Put together drill
 * 1) place parts back in the same order the were removed

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