accumulator and orfice tube

[JORGIE95961]

Good and happy sunday folks.. Im tryingto do some research on getting my ac up and running in my non ac cab... I keep hearing about replacing the accumulator on the core support aand adding it on the evaporator. my question is how do i add an orfice tube , what is it used for (what does it replace) and what accumulator do i get to replace ?

[ole dollor]

what year a/c system do you have to put in you non a/c truck...can you show some pic's of what you have , the older systems did not have the orfice tube, the had an expansion valve....the orfice tube went inside the line going to the a/c evaperator coil inside the black box....it was a filter and worked kinda like an expansion valve....trying to go from memory....the accumulator , a the the core support should be a reciever dryier that has a window to see the air bubbles when you need freon, later they put the dryier inside the accumulator and made it one unit...it will be a big aluminum can up by the firewall black box with a big line running to and from it.....could have a compressor cycle switch screwed into it...depending on year model ...

dang...aluminum is hard to spell.....

[JORGIE95961]

I have the corect system for the 71 c10. but i know there is an upgrade kit to change the aforementioned to a newer style. id just rather pay junkyard price vs $400+

[ole dollor]

ok...i am not to up on whats available now for the up grades...sorry...like you stated i would stick with the same parts that came with the system and try to find the parts i needed....except the compressor, if yours is bad i would upgrade it with the newer sandon type that would fit your brackets....they work great and cost a forth as much.....