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Need help to disassemble vacuum relay

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Old Apr 2, 2009 | 04:06 PM
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Default Need help to disassemble vacuum relay

Hi! Have someone an idea how i can disassemble a wiper door (same as headlight) actuator relay? Mine is leaking. Have the original one at my car and do not like the idea to change it to a reproduction.
Thanks, Peter
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Old Apr 2, 2009 | 05:13 PM
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Originally Posted by ha_pe_1968
Hi! Have someone an idea how i can disassemble a wiper door (same as headlight) actuator relay? Mine is leaking. Have the original one at my car and do not like the idea to change it to a reproduction.
Thanks, Peter
See that ring holding the 2 halves of the bladder housing together? It's just crimped on. Get a thin, flathead screwdriver (sharpen it if you have to) and a pair of needlenose pliers. Slowly and carefully pry it up all the way around. Then that stainless top will pop right off.


Last edited by wcsinx; Apr 2, 2009 at 05:16 PM.
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Old Apr 2, 2009 | 05:15 PM
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Hi Peter,
Bob Demmel, in Texas, rebuilds the actuators you might want to check with him to see if he does the relays too. 210-393-3958 or 972-377-2096.
Regards,
Alan
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Old Apr 2, 2009 | 05:31 PM
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http://www.corvette-101.com/relays.htm
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Old Apr 2, 2009 | 06:54 PM
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Diagonal cutters w/ one side insulated will open fast.

RTV will restore.
http://forums.corvetteforum.com/c3-g...of-vacuum.html
slk230red asked for more info. & did a great job of opening it.

Last edited by Ganey; Apr 2, 2009 at 07:00 PM.
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Old Apr 6, 2009 | 06:38 AM
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Thanks a lot for help! Will try it next weekend :-) ...hope it will work!
Alan, do you have a mail adress of Bob Demmel?

Peter
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Old Apr 6, 2009 | 12:50 PM
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Originally Posted by ha_pe_1968
Thanks a lot for help! Will try it next weekend :-) ...hope it will work!
Alan, do you have a mail adress of Bob Demmel?

Peter
Well if you screw it up, I have two originals to sell.
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Old Apr 6, 2009 | 03:48 PM
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Hi Peter,
Sorry, I just have the phone #s from his advertisement in the NCRS DRIVELINE.
Regards,
Alan
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Old Apr 6, 2009 | 08:49 PM
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There's a small clip on the bottom that comes off easily. I removed the spools and super glued small o-rings to them, lubed them up with vaseline and reassembled.
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Old Apr 7, 2009 | 12:37 PM
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Thanks again for help!!!! :-)
Aktbird: good idea, the control port of mine hold vacuum so i will try to pull out the spool.
Think it is not easy to get the cap off the relay without damage.

toddalin: thanks, hope i do not need it but by the way: how is the condition and the price? Are these the 1969-1971 ones?

Alan: have the mail...tell me if you need it one day

Thanks,
Peter
http://members.inode.at/587867/
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Old Apr 7, 2009 | 04:44 PM
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Originally Posted by ha_pe_1968
Thanks again for help!!!! :-)
Aktbird: good idea, the control port of mine hold vacuum so i will try to pull out the spool.
Think it is not easy to get the cap off the relay without damage.

toddalin: thanks, hope i do not need it but by the way: how is the condition and the price? Are these the 1969-1971 ones?

Alan: have the mail...tell me if you need it one day

Thanks,
Peter
http://members.inode.at/587867/


Yes they are the "two finger" '69-'71 model and they are the two that were removed from headlights of my first day production '70 (#131). Because NCRS could not see the tops on these, I put on the later model and socked these away for a "rainy day."

They operated fine when I pulled them off the car ~15 years ago. The cad shows some "blackened" spots and the "foams" are missing.

I would like $200/pr realizing that Zip charges $125 each for the later, incorrect versions. But I am open to reasonable offers.
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Old Apr 7, 2009 | 07:38 PM
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Originally Posted by Ganey
Diagonal cutters w/ one side insulated will open fast.

RTV will restore.
http://forums.corvetteforum.com/c3-g...of-vacuum.html
slk230red asked for more info. & did a great job of opening it.
Great link Ganey. I may try it just for kicks.
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Old Apr 8, 2009 | 09:36 AM
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With Ganey's help, I was able to restore my vacuum relays in July of 2007. They're still working.

Here's my experience:

Un-crimp, remove plunger, clean rubber stem with alcohol, apply a "thin" film of Black RTV to both ends, let dry, apply a little Vaseline, re-install plunger, spring and cap, and re-crimp.







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