Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Last hose! WOHOOO!!!!1

This is the big one, the #10 discharge hose. Put the grommet on the hose FIRST!

Install a #10 rubber O ring gasket on both ends of the hose and put plenty of the supplied lubricant on them.

Put the hose through the loose firewall cover.

Loosely install the hose onto the underdash unit and A/C compressor. Once you have the hose turned the way you want it, tighten down the fittings on both the A/C compressor and the underdash unit. Again, it's hard to get to the underdash unit, but it can be done :D

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Next, slide the A/C/heat cable through the hole in the firewall cover with the grommet on.

You can finally slide the firewall cover on! VA recommends you put a bead of caulking around the opening before snapping it in place (it uses metal clips already installed.)

Once the cover is on, use a small screwdriver and carefully push the grommets into place. The all went on easy except for the #10 hose. Take your time with it, it will go on properly.

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Now it's time for the heater control valve. There were no specifications on where to cut the heater hose, so I cut mine close to the firewall cover. I wish I had cut it so it was an inch or two longer. Oh well.

Anyway, cut the UPPER 3/8" heater hose near the firewall, I guess exactly where is up to you and your interpretation of the VA Instructions.

Anyway, install the control valve so that it is somewhat level. Install the 3/8" hose you just cut off onto the other end of the control valve. Put hose clamps on both ends and tighten 'em down!

Next, take the heater/A/C cable and put it on the shaft on the control valve. Put the A/C/heat lever all the over on "heat" and move the arm on the heater control valve to "open." You can now tighten the hold down to hold the cable in place.

Move the heat/A/C arm in the cab and make sure it moves freely from Heat to A/C. If not, make adjustments to the cable hold down at the control valve.

NOTE: When installing the control valve there is a directional arrow on it. You want the arrow to point TOWARDS the cab of the truck. Hot water will flow from the intake manifold to the control valve, through the heater core in the VA underdash unit, then back through the bottom hose to the water pump. With the A/C on and the control valve on "closed" no hot water will flow through the VA unit.

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Hmmmmm, so what's next?

I guess it's time to finish up the wiring! I drilled a small hole through the firewall cover for my wiring. You could run it over by the fuse box and then over, but I thought, what the heck, just drill a hole :lol: (You can do the same for the power wire too, as you'll see in a minute, but you'll probably need more wire...)

You need to run the blue wire from the A/C thermostat through the hold in the dash to the engine bay and then hook it up to the binary compressor safety switch we installed on the #6 hardline earlier.

there is also a "loose" blue wire with the kit. This wire needs to go from the binary compressor safety switch to the black wire coming out of the compressor. The blue wires simply push onto the binary switch and the blue and black wires push together at the compressor. Simple :D

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Almost there, just one more wire! (Well, really 2!)

The kit comes with a little junction box (30 amp circuit breaker) with a rubber cap on it. Remove the rubber cap. Take the nuts off and put the thick red wire from the power relay on one side of the 30Amp circuit breaker, put the nut on and tighten it down. There is another "loose" thick red wire that comes with the kit. Put one end of it on the other end of the 10 Amp circuit breaker, put the nut on and tighten it down.

Next, install the circuit breaker somewhere. I installed mine in an existing slot looking thing on my fender. I drilled 2 holes and installed screws with nuts to hold it down. Put the rubber cap back on the circuit breaker.

Next, you want to take the nut off of your batterys junction box and put the last loose end from the 10 Amp circuit breaker on it and tighten the nut back down.

Make sure the battery is still unhooked :crazy:

YOU NOW HAVE THE WIRING COMPLETE!!!! WOHOOOOOOOOOOOOOOOOOOOOOOOOOOOOO

THAT WASN'T SO HARD NOW, WAS IT?

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Hmmm, what's left???

Heater hoses! Ok, The top hose needs to go to the intake manifold (the hose with the control valve on it.)

The bottom hose needs to go to the water pump.

Cut them down so they fit neatly and put hose clamps on them.

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

OHHHHHHHHHHH! Almost forgot!

You need to put the black sticky tape stuff on the #10 discharge hose inside the cab!

Below is a pic of the tape stuff VA supplies you with. It's kind of a pain to install but is very important. The line will "sweat" and leak into the cab if you don't cover it. The tape keeps it from condensating.

It sticks to itself and metal very well. I put a piece lengthwise across the top and bottom and squeezed 'em together over the line. Works well, hasn't leaked a drop in 4 months.

Also, you need to hook up the vent like that goes through the 5/8" hole that was drilled through the firewall. You need to stick the hose thought the firewall and figure out where to cut it. Cut the hose somewhere past the firewall (leaving enough room to put the elbow on) put the elbow on and then put the remainder of the hose on the elbow. I have mine draining down past the inner fender.

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

Well, that's about it for the mechanical part....

Put the pulleys on the balancer and water pump.

Install new belts on the alternator and A/C compressor. (You only need the alt. one if you had to relocate yours, like I did.)

I discovered that a 3 row radiator and stock flex fan wasn't enough to keep my truck cool.

SO I installed a 4 row radiator (they're huge), a tranny cooler, and a new thermostat and no more overheating using a stock 7 blade clutch fan.

Once that stuff is back on, put the fan shroud back in, leave it loose so you can slide the fan in and on. Get the fan tightened down and put the fan shroud in place and tighten it down as well. Tighten the alternator belt.

Hook up the hoses to the radiator/motor, hook up the battery, and fill the radiator with a 50/50 mix of water and antifreeze and fire your truck back up. In my case it was about a month after I started :haha:

Don't run the A/C system yet (I did test it with the motor off to see if the fan was blowing and it was) because you need to take your truck to a shop to have the A/C system properly evacuated and charged :banghead:

I left the A/C compressor unhooked until I could take the truck to a shop to have the system evacuated and filled. You could probably do this yourself (minus the evacuated part, but it may not work as well.) The shop also tested for leaks and all was good.

This part is not cheap! I think I paid about $90 for the evacuation and charging. But I feel it was worth it. I called several places and some were as high as $120 for both.

Re: Keep Your Cool! Vintage Air Sure Fit Install in a 67 C-10
 

That's enough for now, I'll do a quick run through of the underdash hoses and glovebox later...



:D