Air Conditioning

[mrein3]

Anybody notice anything different?

Relax a second while I post some pictures.

[mrein3]

I started with a non-AC truck. I modified the firewall to be the same as a factory AC truck.

[mrein3]

A little paint...

[mrein3]

I used an A6 compressor out of a 1971 Monte Carlo I junked in 1994. I put some oil in it and every once in a while spun the compressor and made sure it worked.

I adjusted the POA to work with R134a.
http://www.autoacforum.com/messagevi...AR_MSGDBTABLE=

I flushed the compressor with modern oil that I purchased from ACkits.vom. BAV Auto 100. It is chartruse in color which helps with leak detection. After 3 or 4 flushes I figured it was good to go.

The evaporator and condensor came out of a junk truck. I flushed them with mineral spirits.

I purchased a new, aftermarket expansion valve from ACkits.com.
A new aftermarket receiver/dryer from ACkits.com.
And a new fan belt from NAPA.

I pulled a vacuum. Let it sit for 30 minutes to make sure I had no leaks, then filled the system with 36 oz. of R134a.

[mrein3]

You guys may not like wet spots on your shop floors but I sure don't mind a little condensation dripping off the evaporator in my shop.

[Riveted1]

Very nice! How's it working?

[dukcaln]

great work...you helped me out just by reading your post....

[Katrina/10]

Originally Posted by mrein3

Anybody notice anything different?

Relax a second while I post some pictures.

Nice job! How about inside the cab? Did you replace all the non air stuff? All the hoses, vents and controls, I mean. I have an air cab, but the heat and air components have been removed, I need some info on how it all goes back together.

[RenoKeene]

Great job! I'm finishing mine up but I'm missing the spring that goes from the fresh air flap to the cowel, could you tell me how long this spring is and maybe post a picture of it. I can't button up my cowel without this spring and have no idea what to buy. (Lockdoc sent me one but it is the wrong style)

[mrein3]

Originally Posted by RenoKeene

Great job! I'm finishing mine up but I'm missing the spring that goes from the fresh air flap to the cowel, could you tell me how long this spring is and maybe post a picture of it. I can't button up my cowel without this spring and have no idea what to buy. (Lockdoc sent me one but it is the wrong style)

Its been a while but I remember posting picks of that flapper. The reason I remember is that somebody commented about the picture I took from inside the cowl that shows my deer antler wall of shame in the background.

I couldn't find that post but I did find the pictures. I don't have the length of the spring. What you need to know is that the spring holds the door open, vacuum works against the spring and closes it. I think with that information and the pictures below you can figure out what to use. Just measure from where it attaches to the flapper to where it attaches to the truck.

I picked mine out of a parts drawer at my local hardware store.

[RenoKeene]

Originally Posted by mrein3

Its been a while but I remember posting picks of that flapper. The reason I remember is that somebody commented about the picture I took from inside the cowl that shows my deer antler wall of shame in the background.

I couldn't find that post but I did find the pictures. I don't have the length of the spring. What you need to know is that the spring holds the door open, vacuum works against the spring and closes it. I think with that information and the pictures below you can figure out what to use. Just measure from where it attaches to the flapper to where it attaches to the truck.

I picked mine out of a parts drawer at my local hardware store.

Thank you very much, looks like the one Lockdoc sent me will work. My original one was laying in the bottom of the cowel and it was the type with the coil in the middle and the ends were straight with turned back tips (hard to describe), one of the 'arms' was missing so I wasn't sure of the length, also wasn't sure if the tension was critical.

[jbclassix]

I don't have my truck close to go look at... does anyone know if the fresh air flap can be adapted to non-ac cabs?

[mrein3]

Originally Posted by Katrina/10

Nice job! How about inside the cab? Did you replace all the non air stuff? All the hoses, vents and controls, I mean. I have an air cab, but the heat and air components have been removed, I need some info on how it all goes back together.

Its been a while but I know for a fact that the AC stuff "piggy backs" off the non-AC components. The windshield defroster ducts are the same. I did have to buy a $3 bag of flexible dryer vent hose at the local fleet farm to connect the AC registers to the added from junk truck AC HVAC output.

A look at the LMC catalog helps if you don't have the factory assembly manual.

[Katrina/10]

Thanks! I have some of the parts, but I did not remove them. I'll take a look at the catalog to see what I may be missing.

Gary

[jr1000yarder]

Interested

[Katrina/10]

The kick panel parts are interchangeable. The cowl flap will fit, but you may have to drill a couple of holes to install it. If the cowl flap is not installed the "inside air" function (recirculate) on your control will not work. The cab will not get as cool on very hot days without this.

[sxh9057]

Thanks for the info, glad to know they will fit. See if I can find them at a salvage yard.

[Katrina/10]

That might be a good idea, I don't know if they are available new. Also keep an eye on the parts for sale section here.

[Mr3Speed]

Have you messed with any of the rubber seals inside the ducting. I have a question about the foot/center vent flap.