Wiper Refresh FAQ

CoastalAirCooledVW · Posted: Tue Apr 16, 2013 8:47 pm Post subject:

I just began this process and now I have a few questions and some pictures to contribute.

Image may have been reduced in size. Click image to view fullscreen.

Should this have grease on it?

Oops

What year bays have the plastic gear? This motor is from a 74.

Factory chocolate sauce

Blew this out with the air compressor
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1966 Velvet Green Standard

cdennisg · Posted: Wed Apr 17, 2013 8:16 am Post subject:

I have mine completely installed now, and everything is working well. No more red GEN light at the parking position. I have a bunch of photos to add, but I do not have time right now to do so.

Coastal, clean that old grease off/out and wipe in some new stuff. I used white lithium grease. A little grease on those contacts is OK. Shouldn't be much more that what you show of the old stuff.
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nothing

obnoxiousblue · Posted: Wed Apr 17, 2013 1:36 pm Post subject:

Should this have grease on it?

Yes, well at least, mine did. There should be dieletric grease inside. While it will settle down to the lowest part of the gearbox as the gear and the worm gear spins it will pick up grease and lubricate itself.
The fingers should be clean of any large debris I think, but the purpose of the dielecric grease is to allow the conduction of the current from the fingers to the record player on the gear.

Oops Laughing

I tried to warn you! I mentioned this in my write up!. This happened because you removed the motor shaft separate from the cover. Be careful when you reassemble that you place all the springs back, and dont break any of the copper cables. I used a bent paper clip to hold each magnet/spring back in the channel, then I inserted the shaft, and removed the paperclips. It worked well for me, if you need more detail reach out.

What year bays have the plastic gear? This motor is from a 74.

My 77 has a plastic gear... That's all I know!

Factory chocolate sauce

Not sure if the grease "fouls" or can really become contaminated. But mine was a nice clearish-opaque. Definitely not this dark

Blew this out with the air compressor

Nice, I wiped mine free from any dust/debris. Not sure if yours has it, but be wary of a small cone-like-shaped bushing that (might) sit in the bottom of the cup.
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Mike
1964 Beetle
2001 Eurovan Camper

scrivyscriv · Posted: Wed Apr 17, 2013 3:03 pm Post subject:

On the grease: I cleaned out all the old stuff with lacquer thinner and put a thin coat of moly grease back on the worm and gear faces. The contacts on top of the gear get a thin coat of dielectric bulb grease.

My hardware cleaned up fast soakin in a can with that thinner in it. Barely had to rub it to get the residue off, it was totally caked up before.

Obnoxious - I just got done working on my setup and that cone bearing didn't come out like on yours. Not sure how it's held in there, and I didn't try hard to pull it out, but I don't think it's supposed to come out. Obviously it's not going anywhere but next time you open the motor up see if it looks like anything is missing or broken around it.
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Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help.

cdennisg · Posted: Wed Apr 17, 2013 3:07 pm Post subject:

Here is how I hold the brushes in place while I reassemble.

I also never saw that cone washer come loose. I cleaned inside the case with electrical cleaner, then gently blew it out with compressed air.
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nothing

scrivyscriv · Posted: Wed Apr 17, 2013 5:48 pm Post subject:

obnoxiousblue · Posted: Wed Apr 17, 2013 5:54 pm Post subject:

Yeah, I didn't know anything about it when. Frat started taking things apart. After my refresh, I've got both speeds again.
My 77 obviously has the wiper control on the column, and after having now taken apart the motor, and the switch I better understand how it works Smile

Thanks for thinkin of me though!

Now, I'm working my way through the intermittent wiper mod!
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Mike
1964 Beetle
2001 Eurovan Camper

ruprect

So I've rebuilt and refreshed the wiper motor, and it works wonderfully. However here's the rub: if I have the wipers pulled off of the glass, the motor turns them, but the moment I place one even partially towards the glass the motor turns but the wipers do not. I checked the gearing inside of the motor itself and it does not seem to be stripped.
I am thinking that by placing the wipers on the glass, it is putting a bit of pressure on the shafts which is binding them, but I do not know how to get past this. Any suggestions?

cdennisg · Posted: Wed May 01, 2013 9:13 pm Post subject:

I would bet that you do not have the the main wiper motor mechanism nut tightened all the way. The nut that holds the main lever to the shaft of the wiper motor needs to be snugged down tight, or the motor shaft can spin inside that lever, and neither the wiper arms nor the entire mechanism will move.
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nothing

Stuartzickefoose · Posted: Wed May 01, 2013 10:52 pm Post subject:

cdennisg · Posted: Wed May 01, 2013 11:09 pm Post subject:

Stuartzickefoose · Posted: Thu May 02, 2013 7:32 am Post subject:

obnoxiousblue · Posted: Thu May 02, 2013 7:41 am Post subject:

If it is not the nut that secures the arm, you should look to make sure that the grooves on the end of the shafts are in good shape.
They are responsible for bearing all the force of the wiper arms, and over time they wear like anything else. With little resistance, they might have enough of a grip to turn the arms.
If there is force against them though, you might find they spin but don't move the arms.

Check the nut like cdennisg said. If it is secure, then you would want to remove the caps on the wiper arms, remove the nut that holds the arm onto the shafts and look at the condition of the shafts. You could even remove the nut and turn on the wipers. You would be able to see if the shaft is spinning inside the arm or if it is even spinning at all.
_________________
Mike
1964 Beetle
2001 Eurovan Camper

CoastalAirCooledVW · Posted: Tue May 28, 2013 8:45 pm Post subject:

Finally got around to putting my wipers back together. I left that chocolate looking mess above alone and re-greased everything else with white lithium grease. Worked great and glad I did it because it rained the 7 hour drive back from Bugorama Laughing

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1966 Velvet Green Standard

Stuartzickefoose · Posted: Tue May 28, 2013 11:46 pm Post subject:

cdennisg · Posted: Wed May 29, 2013 8:34 am Post subject:

Stuartzickefoose · Posted: Wed May 29, 2013 8:43 am Post subject:

VW Addict · Samba Salesman Joined: January 09, 2003 Posts: 3920

Amskeptic ... THANK YOU!!

This thread help me so much tonight, uninstalling the wiper motor on my '79 Westy! THANK YOU!!!

HarryFD · Posted: Thu Oct 17, 2013 3:02 pm Post subject:

Hi,

Great thread. I needed to only replace my dead body grommets for the wipers.

I did not need to remove the wires from my wiper motor, I just:
-Removed the wiper arms;
-Took off the nuts (discovered I did not have washers under the nuts);
-Removed the glove box;
-Removed the heater ducts
-Undid the wiper motor from the body and pulled it back;
-Installed new grommets; and
-Reinstalled everything.
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1970 Deluxe Sunroof Bay Brilliant Blue/Cloud White
1973.5 911 Targa
2009 MB C300


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