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06-11-2004, 08:24 AM
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#1 |
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Registered User
Join Date: May 2004
Location: Topeka, Ks
Posts: 2,293
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A/C control repair
Can the vacuum part of the heater control valve on an A/C truck be repaired? I think I have a leak but wasn't sure if there were seals or orings that could be replaced. I know you can replace the levers and faceplate but I have never seen anything advertised for the vacuum part. Surely somebody out there has been into one of these and knows for sure.
Thanks Jeff |
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06-11-2004, 10:13 AM
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#2 |
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Senior Member
 Join Date: Mar 2003
Location: Colfax-California
Posts: 8,628
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I have just changed out the little vac. valve before. just a couple of small screws.
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06-11-2004, 04:45 PM
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#3 |
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Not a bad nut after all..
Join Date: Dec 2000
Location: ND
Posts: 1,759
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I have the same problem. Where can you buy this vacuum valve?
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06-11-2004, 08:23 PM
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#4 |
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Registered User
Join Date: Jul 2003
Location: north of Phx AZ about 30 miles
Posts: 698
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I dilled the rivet out on mine, greased the moving parts and installed a new rivet. Lot of work for a cheapie little part but thats just me.
__________________
Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold |
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06-11-2004, 09:46 PM
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#5 |
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Registered User
Join Date: May 2004
Location: Topeka, Ks
Posts: 2,293
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Hey Walker, are there little seals or o-rings in there? I have never actually had one apart. Anybody out there have an old one that they can disect and take a picture of?
Jeff 
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06-12-2004, 01:15 AM
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#6 |
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Registered User
Join Date: Jan 2003
Location: Gulfport Ms
Posts: 401
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I was told a couple of years ago that they were unavailable. I will be watching
this also. EdB |
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06-22-2004, 08:41 PM
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#7 |
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Registered User
Join Date: May 2004
Location: Topeka, Ks
Posts: 2,293
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I think its official name is "Control head vacuum switch". Does anyone know if it is available through GM? Somebody has to be making them if they are still selling new complete control units, right?
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06-22-2004, 08:47 PM
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#8 |
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Account Suspended
Join Date: Jul 2003
Posts: 1,284
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Vacum S/w's
I was mistaken the ones I have are not used, they are new and they are 15.00 plus shipping.
Shawn Last edited by rickspickuppart; 06-24-2004 at 04:30 PM. |
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06-23-2004, 12:02 AM
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#9 |
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Registered User
Join Date: Jan 2003
Location: Gulfport Ms
Posts: 401
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Rick, I am definately interested. I will call you tomorrow.
EdB |
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06-23-2004, 12:05 AM
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#10 |
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Registered User
Join Date: Jul 2003
Location: north of Phx AZ about 30 miles
Posts: 698
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Can't remember for sure on that, seems to me the seal was felt and grease/parafin. I just regreased it and it was fine.
__________________
Andy,Phx AZ '67 C-10 (Ahhh, done at last. Well there is that disk front end I want to put in and...) "23 C-Cab-sold '48 Ford 8N tractor(still working) '67 Scout(Now on the road) '70 MG B.-sold |
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06-24-2004, 04:27 PM
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#11 |
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Registered User
Join Date: May 2004
Location: Topeka, Ks
Posts: 2,293
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I have a couple of used ones also but they leak. They will not hold a vacuum as I would guess most used originals wouldn't. What bugs me is that you can buy the whole control assembly new with a new vacuum control switch but you never seem to see just the vacuum switch for sale. Obviously someone is making them, does anybody know who builds them for places like Chevy Duty and LMC? They will have them.
Jeff |
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06-24-2004, 04:31 PM
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#12 |
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Account Suspended
Join Date: Jul 2003
Posts: 1,284
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I made a change to the reply I made previous in the post.
Shawn |
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