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
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