First timer, new comer and need purchase advice. 69 cst lb

[jorgensensc]

I think you did great. The brakes may have been upgraded to disc, which would be a good thing for you. Although judging by the master cylinder compartments being equal in size and the 6 lug still on the front, I think it is still drum brakes. Usually if someone goes stock disc brakes they convert over to 5 lug ( as 71-72 had factory disc brakes but were 5 lug). And if he bought an aftermarket kit to keep the 6 lug front, then he would have probably used the correct master cylinder after going through that expense. If you don't have disc brakes that would be the first mod I would do if it were me. There are threads on here on how to do it fairly inexpensively useing stock 71-72 parts or using 73+ parts that are plentiful and cheap in the junkyard. I would do this even before the AC.

On the AC. Does the clutch engage when you turn on the AC? If so then you may be low on freon or out of freon with a leak. Also depending on if it is r134 or r12 your system may not function great without some modifications if it is r134. If it is r12 you probably won't be able to find the freon as its not made/sold anymore. You may be able to find some somebody has left over, but its going to be expensive.
Just search here on the message board and you will find the mods to make the r134 work. Unfortunately what I have found when buying used vehicles where the AC doesn't work there is usually a reason that is beyond a simple recharge. Owners don't mind spending the money to have it recharged once, but if it leaks out fairly quickly then they know its something more costly, (especially in AZ). So be prepared for that.
On a side note, you seem like a really intelligent young person. You may not be mechanically inclined yet, but you did your research before you came on here and asked questions and before you went out and bought the first thing you saw. You spoke intelligently about the truck and the concerns. You will have absolutely no problem getting up to speed on fixing these old trucks! I lok forward to your questions and watching you learn as it seems to me you will garner the knowledge on this board and appreciate it!
Good luck!
Shawn
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