7050

we bought a new 7050 in 1973 traded a 190XT-LPG and $18000.00 to trade.if i remember right the list price was around $24000.00

I would guess you can get a rebuilt compressor for a couple hundred bucks or so and receiver dryers are on ebay for around 30 bucks.  You should always replace the receiver dryer any time the system is opened. My 7050 was converted to R134A and works pretty good, but there are other alternatives out there such as Red Tek and Freezone. Install a shutoff valve in your heater hoses that run to the cab, so you have a positive shutoff-that will improve your A/C performance more than anything else you can do.

Edited by redline - 15 Feb 2012 at 2:32am

Please take the time to flush the system with a good quality A/C system flush product, I know it takes extra time and money, but if you have any gunk in the system specifically the expansion valve, it will be well worth the effort.