 Wiper Crank Assembly Refurb, Any way to disassemble? |
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| dereknlee |
 May 5 2020, 10:46 PM
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#1
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Member  Group: Members Posts: 63 Joined: 16-March 12 From: Shoreline, WA Member No.: 14,259 Region Association: Pacific Northwest 
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Is it possible to disassemble the wiper crank linkage assembly?
On mine, one of the pivot shafts has rusted badly (chrome is all gone, bushing worn into an oval shape). The linkages themselves appear to be in okay shape - bit of corrosion that I'd like clean off and then have them re-plated. But it appears that all the joints are permanently riveted together.  (Sorry, didn't take a photo of the worst of it, just this snapshot to remind me how it all goes back together) Search led me to this post where @Eric_Shea refinished an assembly to look better than new. Dumb question, but is it be feasible to plate the metal with the plastic bushings in place? Or would the plating process destroy the plastic? As for the rusty wiper shaft, is this a standard item that might be able to find new or rob from another Volkswagen? I guess then I'd be looking at welding the shaft onto the link. Or should I just start the search for a better condition assembly? Thanks, -Derek |
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| Mikey914 |
May 5 2020, 11:12 PM
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#2
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The rubber man Group: Members Posts: 12,669 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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They are riveted. We are making bushings to rebuild these and the only way to do this is to drill out and then tap for a screw and washer to re attach
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| dereknlee |
May 6 2020, 07:42 AM
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#3
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Member Group: Members Posts: 63 Joined: 16-March 12 From: Shoreline, WA Member No.: 14,259 Region Association: Pacific Northwest
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Darn. Okay, well I guess I could look into using pins like these. Need to decide how much disassembly is worth vs. just cleaning it up as is.
The bigger issue is going to be the wiper shaft. I could clean up the surface, but it will never be as smooth running as the chrome was. The bearing sleeve is wallered out, tried to coerce it with a hammer and punch but it wouldn't move. My friendly family machinist could probably bore it out. But is it worth all the trouble?   Saw this new linkage assembly for another VW, surprisingly cheap and the parts look somewhat similar. No idea if any of the dimensions are remotely close, but still tempting. |
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| ClayPerrine |
May 6 2020, 07:50 AM
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#4
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Life's been good to me so far..... Group: Admin Posts: 15,469 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille
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If you are keeping it bone stock, I suggest getting a used rack assembly that is in better shape. You can also get a wiper rack from a 911 that will have a 3 speed motor on it. You have to cut down the mount tubes with a tubing cutter and put the shafts in from the 914 rack. But you get the 911 3 speed motor.
If you want an upgrade to that, get the wiper rack from a 964. It bolts in and has a heavy duty 3 speed motor on it. Clay |
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| dereknlee |
May 6 2020, 08:12 AM
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#5
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Member Group: Members Posts: 63 Joined: 16-March 12 From: Shoreline, WA Member No.: 14,259 Region Association: Pacific Northwest
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QUOTE(ClayPerrine @ May 6 2020, 06:50 AM)  If you are keeping it bone stock, I suggest getting a used rack assembly that is in better shape. You can also get a wiper rack from a 911 that will have a 3 speed motor on it. You have to cut down the mount tubes with a tubing cutter and put the shafts in from the 914 rack. But you get the 911 3 speed motor. If you want an upgrade to that, get the wiper rack from a 964. It bolts in and has a heavy duty 3 speed motor on it. Clay Sounds like a good call. There are a number of mid 70's 911 assemblies on eBay right now that look like they have identical linkages (the cad plated cross bar is different, but I could re-use mine). Thanks, -Derek |
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| bdstone914 |
May 6 2020, 08:22 AM
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#6
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bdstone914 Group: Members Posts: 4,522 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
@dereknlee
' date='May 6 2020, 06:42 AM' post='2812180'] Darn. Okay, well I guess I could look into using pins like these. Need to decide how much disassembly is worth vs. just cleaning it up as is. The bigger issue is going to be the wiper shaft. I could clean up the surface, but it will never be as smooth running as the chrome was. The bearing sleeve is wallered out, tried to coerce it with a hammer and punch but it wouldn't move. My friendly family machinist could probably bore it out. But is it worth all the trouble? Saw this new linkage assembly for another VW, surprisingly cheap and the parts look somewhat similar. No idea if any of the dimensions are remotely close, but still tempting. [/quote] I have a bunch of racks. Will need to pull to cross tube to inspect the shafts which can get worn. |
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| Eric_Shea |
Jun 9 2020, 07:41 AM
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#7
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PMB Performance Group: Admin Posts: 19,275 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains  |
Plating does not affect rubber or plastic.
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| Mikey914 |
Jun 9 2020, 08:03 AM
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#8
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The rubber man Group: Members Posts: 12,669 Joined: 27-December 04 From: Hillsboro, OR Member No.: 3,348 Region Association: None
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This is where the bushings we make go -
https://www.stoddard.com/catalog/product/vi.../category/2278/ Attached thumbnail(s) 
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| 914werke |
Jun 9 2020, 08:29 AM
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#9
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"I got blisters on me fingers" Group: Members Posts: 10,066 Joined: 22-March 03 From: USofA Member No.: 453 Region Association: Pacific Northwest
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QUOTE(dereknlee @ May 6 2020, 07:12 AM) QUOTE(ClayPerrine @ May 6 2020, 06:50 AM) If you are keeping it bone stock, I suggest getting a used rack assembly that is in better shape. You can also get a wiper rack from a 911 that will have a 3 speed motor on it. You have to cut down the mount tubes with a tubing cutter and put the shafts in from the 914 rack. But you get the 911 3 speed motor. If you want an upgrade to that, get the wiper rack from a 964. It bolts in and has a heavy duty 3 speed motor on it. Clay Sounds like a good call. There are a number of mid 70's 911 assemblies on eBay right now that look like they have identical linkages (the cad plated cross bar is different, but I could re-use mine). Thanks, -Derek Derek I have several assemblies local that are infinity better shape than that one, |
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