![]() |
|
![]() |
#1 |
Registered User
Join Date: Oct 2009
Location: Sacramento, CA
Posts: 161
|
Heater Explanation?
I know this is probably asking a lot, but could anybody out there provide me with a detailed explanation of how the climate control system in a 1972 C-10 (with A/C) works? I'm trying to get my defroster (heater) working, and all I see is a mess of vacuum hoses, cables, and wires. Is there a diagram out there anywhere that explains what the heck is going on? I'm confused.
__________________
1972 Chevy C-10 ~ 188,000 miles give or take |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Oct 2009
Location: Sacramento, CA
Posts: 161
|
Re: Heater Explanation?
After reading this over, maybe I should be more specific.
The A/C compressor has been removed, and the blower motor is shot. I have a new one on order. However, I also noticed that the vacuum hose which runs from the vacuum pod on the passenger side fender through the firewall wasn't hooked up, and the valve that controls the return of coolant from the heater core to the radiator wasn't opening. So, I hooked up the vacuum line from the vacuum pod through the firewall (there was a little nub sticking out), and I still don't appear to be getting coolant flow through the heater core, even with the temperature control on hot. It's getting cold, and a defroster would be an amazing luxury.
__________________
1972 Chevy C-10 ~ 188,000 miles give or take |
![]() |
![]() |
![]() |
#3 |
Senior Member
Join Date: Jul 2001
Location: Muskegon,MI,USA
Posts: 6,026
|
Re: Heater Explanation?
For now, try hooking up a vacuum source directly to the water valve, The valve is normally closed until vacuum is applied which will stop the water flow.
Jim
__________________
1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC |
![]() |
![]() |
![]() |
#4 | |
Registered User
Join Date: Dec 2007
Location: Santa Maria, Ca.
Posts: 1,423
|
Re: Heater Explanation?
Quote:
__________________
69 Chevy 4x4 383 Power ![]() |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|