跳转到主内容

A comprehensive set of repair information regarding objects with specified tasks, usually for fixing or building.

418 个问题 查看全部

Sparking around the Brushes

I have a dewalt 4" angle grinder.

It started to spark on one side of the armiture.

Do you know what has happend to this tool?

已回答! View the answer 我也有这个问题

这是一个好问题吗?

按维修分数 1

评论:

i have a HOYOMA 3263T rotary hammer the carbon brushes are burning w/ smoke what happen on this tool?

I hav an angle cutter of KPT now its sparking a lot and it become heat could not hold and smoke is comes out from the inside.

dasbishu1986 sounds like a shortened out motor windings. You can take it apart and see if you find some burn marks etc. but you most likely you will need to find a replacement.

添加一条评论

6个回答

已选择的解决方案

If the sparks go all the way around the copper strips, also called the commutator, the armature has shorted. That means the insulation between the wires and the iron has broken down in the inside of the armature. Some times it can be as simple as a short between the bars, the copper strips, of the commutator.

With the tool unpluged, use an air hose with an air nozzle to blow any trash or dust from the area around the brushes and the communator.

If that does not improve the symptoms the next thing is, with the tool unpluged, remove the brushes, often a screw on cap hold them in, and inspect and compare the length. A short length will cause the springs to not put enough pressure on the carbon to make good contact with communtator. In that case, replace the brushes. Also check the freedom of movement of the brushes. If dirt jams the channel the brush slides in, the spring can't push the carbon tight to the commutator.

Good luck!

This repair will work on other hand-held power tools.

这个答案有帮助吗?

按维修分数 12

评论:

Should the screw on cap be tight or slightly loose on the brushes

The cap on the brushes should be tight - especially if it is providing the pressure for the contact for the flexible wire from the brushes to compete the electrical circuit..

添加一条评论

May need to ensure zero debris between commutation segments and to use a sharp blade to cut away said debris.

这个答案有帮助吗?

按维修分数 0

评论:

Working but the corbon bursh is burning

How to remove the short

添加一条评论

clean the commuter with a sand paper

这个答案有帮助吗?

按维修分数 0

评论:

No! Use an emery paper 1200 grade.

添加一条评论

I bought a second hand Hitachi W 6VB2 electric drill it never had a 13 amp plug on it it came with a connector Wat you plug into a transformer so I took that off and put a 13 amp plug on it but when I turn it on it really sparks and crackles so I took it apart cleaned all the comunater and brushes seem fine but still having same problem anyone have any

这个答案有帮助吗?

按维修分数 0
添加一条评论

The sparking around the comunater usually indicates there is a short between the windings of the armature and ground. If nothing else, check between the individual bars and ground. Also there will be a connection to another bar of the comunater.

I am curious about the transformer: What purpose did it serve? Was this a set up for 220 volts used in Europe? Or perhaps another voltage set up, as yet unknown?

这个答案有帮助吗?

按维修分数 0
添加一条评论

hi

If your in the UK and you took off the yellow round 3 pin plug and attached a normal 3pin plug you plug straight into the wall. Then you have taken a 110v power tool and gave it 240v.

The short and curly of it is, it will burn out and then all you'll have left is a paper weight.

In hope this helps

这个答案有帮助吗?

按维修分数 0

评论:

A marble cutter armeture is ok, it's field coil also ok but when operated avvy spark in commutator, where is problem

添加一条评论

添加你的答案

James Hartman 将永远感激不已
浏览统计数据:

过去的24小时: 32

过去的7天: 240

过去的30天: 1,116

总计 65,002