Author Topic: wiper motor inside (cut wires on coil) (Read 4619 times)

walkAbout · « **Reply #15 on:** November 06, 2015 - 04:48:20 PM »

Thanks for all your input. Still have to read Kims PMs and contacted a parts guy who also does 2 speed motors. Lots of information to compare. And hey, everyone is mentioning Kim.

1st, better 2nd I will try again with the ground strap, as the wipers where moving, but very slowly. As for the rebuilds, I'm in Germany, so I'll try first to get working, what I have. As for the cut wires, I will test each windings, but have to find out, how the power connects to the brushes. Attached the measured wiring for the brushes. I guess, the right brush is one source (battery), and the to left brushes are for the 2 speeds, one ground directly, the other ground over the ballast resistor. I have to find a wiring diagram of it (have the whole book here...). Then with the angles of the brushes I should be able to measure each winding of the motor core and should have a go through on my little voltmeter. It should show 0 ohms on each winding in the right position.

My initial question was, if everyone else noticed the cut wires so far, but it seems nobody noticed so far, or it is unique, but why...

CU

walkAbout

Edit: Added 2speedterminalIdentification.

passion4mopars · « **Reply #16 on:** November 06, 2015 - 10:41:58 PM »

https://www.passion4mopars.com/Bench-Test-Mopar-2-Speed-Wiper-Motors-Concealed-and-Nonconcealed_b_5.html

https://www.passion4mopars.com/Wiper-Motor-Wiring-Diagram_b_6.html

Hopefully that information will help. My old partner does two speed wiper motors and can assist with parts, etc. that you need, answer any questions that you have. Try contacting him through him website? www.concourscreations.com

JayBee · « **Reply #17 on:** November 07, 2015 - 01:33:42 PM »

Quote from: walkAbout on November 06, 2015 - 04:48:20 PM

My initial question was, if everyone else noticed the cut wires so far, but it seems nobody noticed so far, or it is unique, but why...

I was curious so I took apart both 2 speed wiper motors ('70 & '72) I have and both DID NOT have any cut wires.

walkAbout · « **Reply #18 on:** November 08, 2015 - 05:09:30 PM »

Hi everyone,

new update, after I managed to upload a test video...

Thanks Kim for your links and your PMs, thanks Jaybee for checking and also here, thanks Tommy White, who also checked motors. But now, guess what?

I did a deep dive and checked the windings by connecting an ohmmeter to the corresponding connectors and checked each winding for High and Low speed. Each winding is good 2.5 Ohms over the brushes.

As seeing is believing, here you can see: https://flic.kr/p/AdXrSL (178MB!) Be careful when watching mobil.

The test wasn't so good before cleaning the commutator ring. I knew, that I should clean it, but wanted to check other things before.

I must have a special motor, I will try it in the next month's, but I still guess, it is fine and with a ground strap it will run like it should.

And now. Do I have some misunderstanding, or do you also mean the windings are fine?

Cheers from Germany
walkAbout

walkAbout · « **Reply #19 on:** November 12, 2015 - 04:32:33 PM »

Hi peeps,

all quiet? Do you think, what a strange German? I'm more an electrical guy, so I tested like I've learned in my early days, but Ohm's law is the same these days. The armature windings must be OK, as every winding has 2.5 Ohms over the brushes. Maybe they winded and extra winding and corrected it afterwards in the factory. At this time I have no time for testing, so I stay with theory.

CU

walkAbout

JayBee · « **Reply #20 on:** November 12, 2015 - 04:37:56 PM »

I tested both mine using Kim's instructions, worked great. That would be the true test to make sure all is AOK with yours.

walkAbout · « **Reply #21 on:** November 18, 2015 - 03:48:11 PM »

Just for the records here is the Windshield wipers reference book: http://www.mymopar.com/downloads/mtsc/276.pdf

new discovery there, I was not aware of this. 2-speed reversing and non reversing versions. Identified mine as 2 speed reversing version (have one brass and three gray terminals) which Kim's instructions are for (switches the polarity on the brushes). Tests also included in the reference book.

Very good reading.

Will test my motor next weekend.

CU

walkAbout

roadman5312 · « **Reply #22 on:** November 18, 2015 - 04:22:04 PM »

Quote from: walkAbout on November 18, 2015 - 03:48:11 PM

Just for the records here is the Windshield wipers reference book: http://www.mymopar.com/downloads/mtsc/276.pdf

new discovery there, I was not aware of this. 2-speed reversing and non reversing versions. Identified mine as 2 speed reversing version (have one brass and three gray terminals) which Kim's instructions are for (switches the polarity on the brushes). Tests also included in the reference book.

Very good reading.

Will test my motor next weekend.

CU

walkAbout

Thanks very much, this is excellent reference material.

walkAbout · « **Reply #23 on:** November 21, 2015 - 04:55:52 PM »

Welcome... That's why I posted it here...

Cleaned and restored my wiper motor today. Converted the little rust... Then lubricated all the moving parts and put it together for a test. Tested the armature windings before ^^ and found out, everything OK. So put it in today and tested successfully. Motor runs and stops fine. Will rivet it together tomorrow...

The cut wires must be a mistake when winding the armature. I think they corrected it afterwards like this, as I have full functionality.

CU

walkAbout