Repair electric drill with his own hands : the reasons for failures and their elimination

Problems with cord and a switch

electric drill is a portable unit, so, basically, all the problems associated with flexible wire, in which the power is on.Another problematic point is the entrance to the wire in the drill and place near the fork.Doing repairs drills, these places need to pay attention in the first place.Such damage is often obtained by careless handling with a tool when working in freezing temperatures and in contact with mineral oil to the wire.If external insulation gets damaged, it is necessary to rewind the tape.

Note!With the destruction of the internal wires is the best to replace.

next weakest link is considered to be a switch.Current switches are made in the form of a button and have a small circuit which regulates the voltage.Determine whether the button operates can be a tester.If the voltage is absent, then the problem can be a contact group, and in the circuit itself.If the contact group collapsed, it is necessary to replace the new one.If the fuse of the speed controller can be bridged, but the tool will only work at maximum speed.

Dismantling and repair of electric drill with his hands

Another failure cause can be anchored in an electric drill.In order to check this, it is necessary to disassemble the instrument.After disassembling a finger to try to scroll anchor.If you notice jamming, we can say that the bearings are out of order.To get to the bearings and replace them, have to completely remove the engine from the gearbox.

Before you pull out the "internal" system, you need to remember where that is, so that when the assembly did not make a mess.Once the engine is pulled out, it must be separated from the gearbox.Next is extracted from the stator to the rotor bearings, it is important to avoid damage to the armature winding.Scrolls bearings and calculated which of them failed.To remove the damaged element separates the upper frame, which is fixed bearing.

then remove it from the rotor shaft.If it is difficult to remove, you need to tap on it a hammer through a wooden pad.When removing, make sure that the rotor does not fall to the ground at the same time, because of that it will break.All the damaged bearing is dismantled, and in its place is put a new, build process goes into reverse.

Important!If hammering without wooden spacers, there is a high probability of failure elements tool.

Should I do rewinding?

electric disassembled, check the state of graphite shields.So if they are worn out, you will need to replace them.If after replacing the tool does not work, you can buy a new drill.You can also turn the drill and look for her work, provided that there is a spark at the collector and there is a smell of burning, it is a clear indication of the burning coil of circuit wire coils.

very difficult and is not recommended to do it If the fuse armature or stator rewinds do.It is much easier and less troublesome to buy a new item.But the field winding can just rewind and independently.To do this, take a coil winding of the starter transformer or disassemble.For of calculating the required number of turns, there are special formulas.But it is easier, making unwinding, count the number of turns and the wind a new coil the same amount.

Important!Doing winding, laying coils strictly in one direction.