Electric motor starts only pushed; and how do I open it ?
Electric motor starts only pushed; and how do I open it ?
(OP)
Hello.
I have a 12V motor from an oil pump, an AWD/4x4 differential oil pump, and I am unsure if it is burned or not.
I put power on it and it remains still unless I give it a turn by hand, then it starts and it appears to increase its speed slowly.
It has only ground and one pin, so two wires.
1) Can it be burned and that is why it doesn't start by itself ?
2) Anyone knows a way to open these?
Photos are here: http://tntgallery.com/page-244-32219.html
Thank you.
I have a 12V motor from an oil pump, an AWD/4x4 differential oil pump, and I am unsure if it is burned or not.
I put power on it and it remains still unless I give it a turn by hand, then it starts and it appears to increase its speed slowly.
It has only ground and one pin, so two wires.
1) Can it be burned and that is why it doesn't start by itself ?
2) Anyone knows a way to open these?
Photos are here: http://tntgallery.com/page-244-32219.html
Thank you.





RE: Electric motor starts only pushed; and how do I open it ?
Open it with a hacksaw. It is not serviceable.
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Electric motor starts only pushed; and how do I open it ?
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: Electric motor starts only pushed; and how do I open it ?
I heard some people mention this happens when "start capacitor" of the motor is burned, that makes sense, but I don't know if this motor has a capacitor (maybe inside).
Video should apear here soon: http://www.youtube.com/watch?v=KzmGK3KlaEY
RE: Electric motor starts only pushed; and how do I open it ?
RE: Electric motor starts only pushed; and how do I open it ?
RE: Electric motor starts only pushed; and how do I open it ?
If it is not generating enough torque to turn itself without assistance, it is either bad brushes or the motor it burned out. If you can see two brush access ports on the end of the motor, then you can replace the brushes. If not, it is a throw-away motor. Chances are about 99% that on an automotive winch, it is throw-away.
In the image below, the brush access ports are the slotted dark gray circles on the right side end of the motor. Most of them look similar.
If you insist on trying to repair it, remove it and take it to a motor rewind shop that says that they work on automotive starter motors, the technology is similar. If you want to try to fix it yourself, you are in need of a mental exam.
Last word, this is not a DIY (Do It Yourself) website, it is a place for electrical engineers to help each other with perplexing work issues. Most likely this thread will disappear in short order once the Admins see it.
"Will work for salami"
RE: Electric motor starts only pushed; and how do I open it ?
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: Electric motor starts only pushed; and how do I open it ?
I will look for more motor rewind shops tomorrow, the one I tried today told me to came with the motor opened :)
Maybe I should have mentioned that it stopped working when I first started the car at very low temperature, after it was under -15 Celsius, Mitsubishi repair manual says that this pump works harder in lower temps, maybe something in the motor failed.
This is a video of older pump where motor is very similar but it can be opened, at 21:10 it shows bearings and all: http://www.youtube.com/watch?v=ZrYjQat4KGE#t=21m10...
Right now I am thinking the lower bearing is stuck, as OperaHouse said.
RE: Electric motor starts only pushed; and how do I open it ?
RE: Electric motor starts only pushed; and how do I open it ?
RE: Electric motor starts only pushed; and how do I open it ?
Bearings look ok, one of the brushes wire is black/burned, the other is gold, I think that is my problem :) Will try to replace it tomorrow.
If anyone is curious how it looks: http://tntgallery.com/page-245-87983.html
RE: Electric motor starts only pushed; and how do I open it ?
I always appreciate hearing from someone who finally resolved his problem.
Best to you,
Goober Dave
Haven't see the forum policies? Do so now: Forum Policies
RE: Electric motor starts only pushed; and how do I open it ?
Bill
--------------------
"Why not the best?"
Jimmy Carter
RE: Electric motor starts only pushed; and how do I open it ?