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Old 09-27-2009, 01:00 AM
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Join Date: Aug 2005
Location: Palmdale/Ventura, CA
Posts: 813
Vertical Button Style Climate Control Vacuum Failure ??

Can anyone confirm that their vertical button style climate control panel
has had a vacuum leak/failure and has had to repair or replace this panel ?

These are the 70's through 1980 Auto Temp II version that uses the
AC servo under the hood.

My 1980 appears to be leaking vacuum at the vertical button unit.

I will replace the button panel if need be.
Hoping someone is familiar with this and can advise.

At almost 30 years old and 311800 miles I guess it had to happen sooner
or later.

Any thoughts. When I vacuum pump the main line going into the panel
it holds zero. The line under the hood is Green with yellow stripe.
This provides vacuum to the vertical button panel.
I disconnected it at the panel and tested it there.

Bummed. Panel removal requires center console removal.

But, would like to have AC again, and soon it will be time to provide heat.

Thanks everyone in advance.

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80 300D 340K Owned 30 yrs
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02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250
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  #2  
Old 09-27-2009, 11:33 AM
Wodnek's Avatar
Vintage Mercedes Junkie
 
Join Date: Jun 2004
Location: Southeast Wisconsin
Posts: 1,661
Those can and do fail.

I have 2 spares, and could set you up with one for $30 shipping included.
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  #3  
Old 09-28-2009, 11:13 AM
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Join Date: Aug 2005
Location: Palmdale/Ventura, CA
Posts: 813
Do you have a picture of the part you will send ?

I just got mine out. What a rotten job.

If yours do not leak then I am interested.

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80 300D 340K Owned 30 yrs
83 300SD 440K Owned 9 yrs - Daily Driver 150mi/day
02 Z71 Suburban 117,000
15 Toyota Prius 2600 miles
00 Harley Sportster 24k
09 Yamaha R6
03 Ninja 250
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