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Truck was made in Alaska factory with no air conditioning and that's just not gonna work for me in Texas. What would I need to do this conversion? Mostly, which of these parts can I get from a scrapyard? Just the lines and wiring harness? I'm hoping to spend as little as possible. Motor is already pulled so I figure why not put ac while I'm at it. Thanks, hope I can get this figured out.
I would not recommend getting the lines from a junkyard as you don't always know how long the truck has been sitting. Rust/corrosion are the main problem which will increase the risk of damage when removing. Not only that but if they are rusted through, there may also be water inside the lines. Junkyards are good for getting some things but not everything. Even though it would be cheaper, these things would be better bought new.
I can't agree more. These parts are not good to skimp on, even worse when they're probably 20+ years old. You'll need the dash components, though, which might be good from a junkyard.
I’m doing the same thing. Spent several hours yesterday at the you-pull-it yard. I think the air box section located under the dashboard (this section has the heater core in it) is the same on trucks with AC as trucks without AC. The section on the engine compartment side of the fire wall is of course different and the selector switch is different. I’m planning to buy everything else new, compressor, condenser, evaporator, accumulator, and hoses because I don’t trust anything from a 22 year old truck that’s in the wrecking yard. I’ll post more when I actually do it but would love to hear about it front anyone that’s done it.
Yeah I figured I'd have to buy all new parts, I was just hoping to save a little money on this but since everything else is new (rebuilt motor/trans/transfer case/all suspension components) I might as well not skimp on this either. Thanks guys for the input, and that's good das54 I was really hoping not to pull the dash.
Your 94 already has the dash registers in place so air distribution is not a problem for you as is. It depends on how factory you want it to look. As stated, you need all the under-hood stuff but, as for inside, you could just use a toggle switch to turn on the compressor and leave everything else as-is. Set your existing controls to "vent" and then turn on the compressor.
Yesterday I pulled the under hood airbox and installed the control switch that I got from the wrecking yard. Also ordered new evaporator coil, condenser, compressor, and hoes set from O’Reillys.
I finished adding AC to my 1995 F250. Just in time because it’s finally warmed up here in Oregon. A couple of things to note if your doing this.
1. I did not realize that the evaporator core for the R12 system is different in size and shape than they are for the R134A. I pulled an air box from an older truck, maybe 1993, so I had to buy a Murray 54541 evaporator core. It cost a little more than the Murray 54558 evap core but it seems to work fine with the R134a refrigerant.
2. I Could not make the Murray 7–4531 condenser fit my truck. O‘Reilly’s ordered a second one thinking maybe the wrong one was in the first box that I got but it was the same and would not fit. The routing of the hard lines were too tall to fit through the holes in the front radiator core sheet metal. So after the problem with the evav core and needing to buy an evap core for a 1993 truck they figured I didn’t know what year my truck is they recommended a 1993 condenser Murray part no. 7-4150. Of course it’s for R12 and cost $30 more and it fit. I do not understand why the first one would not fit I am confident my truck is a 1995 model.
3. The compressor and low pressure hose assembly both for a 1995 model fit and connect to the 1993 evav core and condenser with no problem.
4. And of course the high-pressure hose from the condenser to the evav core had to be from a 1993. This was the last part that I bought and I’m not sure why I even tried the part number for a 1995 model. Had to take it back and get the one for the 1993 model. Murray part number 55712. It’s a hose instead of a hard line. Once I had the right hose line the only problem was that I needed to trim two small tabs off the orifice tube to get it all the way into the evaporator core.
bottom line, I could’ve saved a lot of time and a little money if I had bought the airbox from a 1995 model truck but there are none in the pick and pull wrecking yard that I go to. And I’m not sure what the deal is with the condenser from a 1995 because I’m pretty sure the first one O’Reillys gave me would not fit. But in the end I am pretty happy because it works great.
Your 94 already has the dash registers in place so air distribution is not a problem for you as is. It depends on how factory you want it to look. As stated, you need all the under-hood stuff but, as for inside, you could just use a toggle switch to turn on the compressor and leave everything else as-is. Set your existing controls to "vent" and then turn on the compressor.
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