Subject:
Re: Vacuum operated headlights

From: WayneC <WayneC(at)linkline.moc>

Subject: Re: Vacuum operated headlights

Date: Fri, 04 Nov 2005 21:25:31 -0800

Lines: 64

________________________________________________

W. Moore wrote:

> Hi Wayne,

> Thanks for the links. The first link talks about the general idea that

> vacuum systems fail over time; the second link is an advertisement for a

> book on vacuum systems; and the third link talks about repairing the vacuum

> system that operates wiper doors on a `72.

Should be pretty much the same as your system, I think.

> I couldn`t access info on

> revamping vacuum operated headlights that was a feature article in the Feb.

> 03 issue of Vette magazine, the link info. source. If you have a

> subscription would you mind sending along a link for that issue ? TIA.

I do have a subscription, and that issue, but I don`t understand how

that would enable me to give you a web link to part II of the article...

I couldn`t find that installment on their website, either.

In part II they chose to replace every part that Mid America carries

(including both sets of actuator relays and actuators, and all linkage

springs), but recommend the troubleshooting book (The Vacuum System

Troubleshooting Guide by Frank C. Prow, also available through Mid

America), and a vacuum gauge, to determine the specific parts you need.

>

>

> "WayneC" <WayneC(at)linkline.moc> wrote in message

> news:11mklr7ojp74ae2(at)corp.supernews.com...

>

>>W. Moore wrote:

>>

>>>Hi all,

>>>`75 model. My manual doesn`t give instructions or vacuum values for

>>>troubleshooting a sluggish headlight system. Right light is sluggish

>

> when

>

>>>it works and the left light needs human assist for any up/down movement.

>

> It

>

>>>does say that defective vacuum actuators can be removed thru the hole

>>>created by removing decorative front grill. I don`t see how the things

>

> can

>

>>>get past the large tubular vacuum tank. I hope I don`t have to remove

>

> the

>

>>>hood to replace those items. TIA

>>>

>>>

>>

>>I don`t have first-hand knowledge, but I do know there`s a book on the

>>subject; here`s links to a couple of articles, one of which references

>>that book:

>>

>>http://www.vetteweb.com/tech/0212vet_intothevoid/

>>http://www.vetteweb.com/tech/0303VET_VacuumSys/

>

>

>

SUBJECT: Re: Vacuum operated headlights

From: "Raphael" <crap(at)crap.net>

Subject: Re: Vacuum operated headlights

Date: Sat, 5 Nov 2005 09:58:07 -0700

Lines: 32

NNTP-Posting-Host: 69.161.201.61

________________________________________________

Hi there,

I have a 76 that had sort of the same problem. Left side was much slower

than right side.

Replace the main vacuum line going from the reserve tank up to the check

valve, it has probably weakened after 30 years ($0.25/foot at most auto

stores). Replace the check valve and the filter near the engine (you can

temporarily remove and bypass the filter with a single vacuum hose until the

new filter arrives). Before you assume that you need to replace the

actuators and valves, do what I did. Squirt the boot seals on the acutators

with WD-40. Remove the valves and blow them out (carefully) with compressed

air and WD-40 them too.

Good luck,

Mark

"W. Moore" <WJMoores(at)worldnet.att.net> wrote in message

news:glraf.17755$qk4.7401(at)bgtnsc05-news.ops.worldnet.att.net...

> Hi all,

> `75 model. My manual doesn`t give instructions or vacuum values for

> troubleshooting a sluggish headlight system. Right light is sluggish when

> it works and the left light needs human assist for any up/down movement.

> It

> does say that defective vacuum actuators can be removed thru the hole

> created by removing decorative front grill. I don`t see how the things

> can

> get past the large tubular vacuum tank. I hope I don`t have to remove the

> hood to replace those items. TIA

>

>

From: "jjjoseph" <jjjoseph(at)yahoo.com>

Subject: Vacuum system guide

Date: Sun, 2 May 2004 22:33:16 -0500

Lines: 16

________________________________________________

About a month ago, there was a posting regarding a trouble shooting vacuum

system guide that was really, really good and logicial.

Does any recall how to acquire a copy as I`m a new owner of a 71 coupe and

although most things are mechanically in working order, I can`t get both

headlights to come up, nor do the windshield wipers works. So, I can`t pass

a Texas Safety inspection, which means I can`t drive, legally...

So, I could really use a bit of info so that I can at least drive it, while

I continue to make repairs.

Thanks

JJJSLJ

71 350/Auto coupe

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