Can anyone tell me what these are? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ClassicRedneck05 · 01-04-2007, 02:23 AM

these are on here and i duno what they are for or how to hook them back up

72armyswbtruck · 01-04-2007, 02:44 AM

That is a vacuum thing for the a/c, someone else jump in here and help this guy out.

**WorkinLonghorn** · 01-04-2007, 03:05 AM

My AC is a dealer unit so I don't have these but it looks like the larger one in a vacuum "reservoir" and the smaller in a heater cut-off valve,which shuts off the hot water to the heater core when the AC is turned on. Pls correct me if I'm wrong fellas.

ClassicRedneck05 · 01-04-2007, 03:12 AM

Quote:

Originally Posted by cougar

My AC is a dealer unit so I don't have these but it looks like the larger one in a vacuum "reservoir" and the smaller in a heater cut-off valve,which shuts off the hot water to the heater core when the AC is turned on. Pls correct me if I'm wrong fellas.

there is also another one on the inside on the passanger side under tha dash by the vent but the vent is also spring loaded unlinke the driver side thats manual should these be hooked up?

Barrnone · 01-04-2007, 03:17 AM

Try this thread it should show where all of the lines go.
http://67-72chevytrucks.com/vboard/s...vacuum+diagram

01-04-2007, 02:23 AM	#1
ClassicRedneck05 Senior Member Join Date: Dec 2005 Location: Humble, Texas Posts: 262	Can anyone tell me what these are? these are on here and i duno what they are for or how to hook them back up Attached Images

01-04-2007, 02:44 AM	#2
72armyswbtruck Registered User Join Date: Feb 2004 Location: Idaho Posts: 4,033	Re: Can anyone tell me what these are? That is a vacuum thing for the a/c, someone else jump in here and help this guy out. __________________ "Remember, They can Kill You, but they can't eat You, That's against the law!!!!!!!!!"

01-04-2007, 03:05 AM	#3
WorkinLonghorn Senior Member Join Date: Dec 2006 Location: Studio City, Calif. Posts: 2,887	Re: Can anyone tell me what these are? My AC is a dealer unit so I don't have these but it looks like the larger one in a vacuum "reservoir" and the smaller in a heater cut-off valve,which shuts off the hot water to the heater core when the AC is turned on. Pls correct me if I'm wrong fellas.

01-04-2007, 03:17 AM	#5
Barrnone Registered User Join Date: Feb 2006 Location: Roseville, CA Posts: 5	Re: Can anyone tell me what these are? Try this thread it should show where all of the lines go. http://67-72chevytrucks.com/vboard/s...vacuum+diagram __________________ 72 Chevrolet C20 LWB Fleetside 89 Toyota Supra Turbo 87 Toyota Supra (DD) 95 Ford Thunderbird (4.6 V8) 95 Chevrolet Tahoe



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