B1B Keven Posted August 13, 2011 Report Posted August 13, 2011 Has anyone found a source for the parts? I've searched the forum and couldn't find anything. My motor will work, then not, then work....... Quote
Dodgeb4ya Posted August 13, 2011 Report Posted August 13, 2011 Did you check for a good ground?-The phillips screws on the top center of the dash are the ground for the wiper motor. Quote
Desotodav Posted August 13, 2011 Report Posted August 13, 2011 I had my wiper motor rebuilt as it was a bit sticky. It turned out that the factory grease that was used all of those years ago had solidified over time and was no longer lubricating anything. It came out looking good and working much better after the rebuild. I agree that your earth could be a problem also. Desotodav Quote
B1B Keven Posted August 13, 2011 Author Report Posted August 13, 2011 It's out on a bench at a repair shop. The owner took it completely apart, cleaned a polished the internals and connected power (off a battery). It will work, then not, then work...... Sometimes, to get it to spin, he has to leave it powered and move the shaft by hand. To me, it sounds like it needs new brushes. R/C motors will do exactly the same thing when the brushes need replacing. Quote
John-T-53 Posted August 13, 2011 Report Posted August 13, 2011 (edited) Yeah, sounds like brushed or a loose connection somewhere in the motor. I'd imagine they would check the armature for shorts, etc too. Miy wiper motor was working slow before, and took a long time to get moving especially on cold days. It was a combination of old hardened grease and a bad ground. I ended up running a ground wire to the body because the connection at the mount bracket was a poor one. Works great now! Edited August 13, 2011 by John-T-53 Quote
JBNeal Posted August 13, 2011 Report Posted August 13, 2011 DUDE--ya went to all that trouble to clean up that motor but ya kept the original corroded wires?!? Say it ain't so... I've had good luck with old Dodge electric window motors by degreasing, removing corrosion, lubricating and re-assembling. I reckon the same goes for these wiper units, but it also helps to run a separate ground wire to a chassis ground circuit. As with the light bulbs & the fuel level sending unit, the electric motor uses the chassis as a common ground. Unfortunately, corrosion at frame rivets, bolt & casting threads, internal/external lock washers, and the stranded copper conductors cause a cumulative voltage drop as current is restricted. Separate ground conductors for these items in place of the mechanical fastener ground circuit should provide less resistance for full power. When I installed my fuel level sending unit, I added a stud to the sending unit for an extra conductor that I ran to the battery, and the intermittent fuel gauge readings I had been getting went away. Knowing this, I plan on running a conductor throughout the truck as a ground circuit. It may be overkill, but I'm running 6V so I don't want any unnecessary voltage drops for maximum electrical performance. Quote
B1B Keven Posted August 13, 2011 Author Report Posted August 13, 2011 (edited) Yeah, sounds like brushed or a loose connection somewhere in the motor. I'd imagine they would check the armature for shorts, etc too.Miy wiper motor was working slow before, and took a long time to get moving especially on cold days. It was a combination of old hardened grease and a bad ground. I ended up running a ground wire to the body because the connection at the mount bracket was a poor one. Works great now! Ya know, I'm wondering if it's just a bad ground after all (Dodgeb4ya )? I watched him put the ground cable on the body mount and some sparks flew. Then he moved the ground to the case and it would work intermittently. We'll find out, he's ordering new brushes as we speak. Thanks guy! Edited August 13, 2011 by B1B Keven Quote
ggdad1951 Posted February 7, 2012 Report Posted February 7, 2012 got my electric wiper motor reassembled. No new wires, the electric motor place that checked the motor said they were still good to go. All the steel parts reCAD plated and happy to go! Quote
B1B Keven Posted February 7, 2012 Author Report Posted February 7, 2012 got my electric wiper motor reassembled. No new wires, the electric motor place that checked the motor said they were still good to go. All the steel parts reCAD plated and happy to go! Cool! Never did get mine workin'. Quote
Dodgeb4ya Posted February 7, 2012 Report Posted February 7, 2012 Cool! Never did get mine workin'. Your B1B electric wiper motor is the same as a 1946-8 DeSoto or Chrysler. Maybe 1941 models too. The mount bracket would have to be changed of course. Those motors seldom burn out. I've never seen one fail-but I'm sure it can happen! Bob Quote
B1B Keven Posted February 7, 2012 Author Report Posted February 7, 2012 Your B1B electric wiper motor is the same as a 1946-8 DeSoto or Chrysler. Maybe 1941 models too.The mount bracket would have to be changed of course. Those motors seldom burn out. I've never seen one fail-but I'm sure it can happen! Bob It was really weird Bob. It would work OK, then not, then sometimes if you moved the armature a little. I got one out of a '50 pickup and it works fine. Quote
VintageMoParts Posted February 8, 2012 Report Posted February 8, 2012 When I first got my truck the electric wiper motor was not hooked up. I hooked up the wires and then went driving and as soon as I stopped at the first stop sign, the brake pedal grounded to the negative battery cable and then my wiper motor was grounded to the dash underneath and toasted all the wires to it. SMOKE was pouring out the cab vent cowl... my kids still ask if it's going to burn down everytime we go for a ride... funny.... cars were stopping all over the road to see if we were ok... Quote
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