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What is this part called?

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Old Sep 20, 2009 | 11:59 AM
  #1  
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Default What is this part called?

Just replaced all headlight vacuum lines with kit from Ecklers.

In the nose of the car, there are 2 vacuum distribution blocks that help the headlights come up and down, there are 3 hoses connected to each. What is this called, I think mine are bad and can't find replacements.

I can blow in each hose with the red line and each headlight comes up. I can suck the air out and each goes down, but when I go throuth that distribution block, I can hear air leaking from the bottom of this block, same with the other one.

Is this common, is there a cheap fix or do I just replace them?
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Old Sep 20, 2009 | 12:04 PM
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Right after posting I found it, looks like they are called the Headlight & Wiper Door Vacuum Actuator Relay.

Is this a common problem, is there a quick/cheap fix for air leaking out near the bottom somewhere?
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Old Sep 20, 2009 | 12:04 PM
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www.corvette-101.com

This webpage has a help section that should help you with the troubleshooting of vacuum problems. From your description, I think you are talking about the vacuum control relays.
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Old Sep 20, 2009 | 12:20 PM
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I forgot all about that website, thanks for the reminder!

It has a section on how to test the actuator and rebuild it if necessary.

THANKS!!!
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Old Sep 20, 2009 | 03:43 PM
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There are some on Ebay now for $38.00 each. I didn't think it was worth my time to try and rebuild them. Now, the actuators were a different story, they're a snap to rebuild with the new seals and boots.
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Old Sep 20, 2009 | 05:56 PM
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The relays can be restored w/ some black RTV.
http://forums.corvetteforum.com/c3-g...of-vacuum.html

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Old Sep 20, 2009 | 06:09 PM
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Default relay

where excatly do you put rtv do rebuild has 2 versions of these one is us made for 115.00 or off shore one for about 60.00
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Old Sep 20, 2009 | 06:24 PM
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Restore w/ black RTV to the seals.
Un-crimp, remove plunger, clean rubber with alcohol, apply some Black RTV to seals, let dry some. Apply a little Vaseline to tube, re-install plunger, spring and cap, and re-crimp.
See the topic link I posted. 71 Green 454 posted pics. when he did it.
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