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electric wiper replacment
#1413628 Sat Jun 12 2021 03:23 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
thought I would share my experience on replacing the vacuum motor on my 3100, not the easiest thing I have done, radio grill must come out, easy to get the old one out not so easy to bolt the new one in, its huge and and needs shimed downward. New motor didnt clear the OEM choke cable so that got replaced with a new one that was longer with more slack, new motor didnt come with all the hardware needed, support bracket isn't bent correctly so that need tweeked. crank on the new motor fell off while installing it because the factory didnt tightened the set screws, check yours first....., wipers park in a different position every time, needed some TLC to make that go away, new wiper knob didnt fit the new switch had to drill that out

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DSC03314.JPG (141.21 KB, 155 downloads)

woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413629 Sat Jun 12 2021 03:24 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
all in all better than the tired old vacuum pump but dont think its going to work like a factory OEM wiper


woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413630 Sat Jun 12 2021 03:26 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
better than the worn out motor but dont think its going to be as nice as an OEM motor


woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413632 Sat Jun 12 2021 03:29 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
switch was so big the wires would not clear the top of the motor so I shimed the motor downward and had to still bend the switch terminals out wards

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to big.jpg (27.54 KB, 152 downloads)

woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413634 Sat Jun 12 2021 03:30 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
bell crank fell off cause both set screws were loose, check yours

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loose set screws.jpg (28.1 KB, 151 downloads)

woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413635 Sat Jun 12 2021 03:31 PM
Joined: Mar 2020
Posts: 116
W
woof359 Offline OP
'Bolter
and the new knob hole was way to small to fit on the new switch, easy fix, just drill it out

Attached Files
small hole.jpg (10.55 KB, 150 downloads)
Last edited by woof359; Sat Jun 12 2021 03:33 PM.

woof359 Family 1952 3100 5 Window
Re: electric wiper replacment
woof359 #1413640 Sat Jun 12 2021 05:39 PM
Joined: May 2016
Posts: 225
J
'Bolter
Replaced mine with one from newport engineering. Had zero problems. John


1949 gmc 1-ton
Re: electric wiper replacment
woof359 #1413662 Sat Jun 12 2021 08:51 PM
Joined: Oct 2005
Posts: 3,258
"Hey! I sound like Darth Vader!!
Same here on the Newport unit. Easy install, no problems.

Re: electric wiper replacment
woof359 #1413665 Sat Jun 12 2021 09:10 PM
Joined: May 2005
Posts: 8,244
B
Sir Searchalot
That is a Classic Parts of America part number. A good unit. Classic sells several conversion units. In the description of each motor, it states whether it clears the choke cable or not. The only one that does state that it clears, is one of the 12V motors. The subject of the choke cable clearance and the terminals needing bent is covered here on Stovebolt in several past posts. Most, if not all, of these Classic Parts motors are Newport Engineering units.

Some can be used with original knob, some can not. I thought the knob and shaft were a "D" press-on fit. Must be a set screw if you can "drill" it out.

Many assembly line components are shipped with loose screws. Workers tend to over tighten, over torque, damage things. So they are told not to torque hardware. Automated torque drivers don't work to prevent and automated drivers can cause problems. Lots of consumer items are shipped with a bag of hardware or loose fitting hardware. Unnecessary and costly quality control inspection is thereby eliminated.

Wipers stopping at a different position each time would be an electrical miswire. Park is electrical. The only "tweak" is wire it correctly.


Watch out for careful drivers!!!
I'm away on an ego trip. Will be back on Feb 30.
I'm not an Auto Mechanic, but I play one on TV.
I charge $0.02 for every opinion and I take Paypal.
Plan B is always better than plan A, by definition.
Sometimes no nonsense makes sense, in a sense.
You can't teach a new dog old tricks.
Honk if you're Amish


Re: electric wiper replacment
bartamos #1413667 Sat Jun 12 2021 09:28 PM
Joined: May 2016
Posts: 225
J
'Bolter
Newport makes all 12 volt wiper motors. Not 6 volt. As I inquired when I ordered. If you look at the op s box it looks to be made by counter part. Off shore


1949 gmc 1-ton
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