<VV> Charging AC

[Britt Griffith]

With that little amount of refrigerant charged into the system, I would 
think it's a blockage somewhere in the high-side of the system, close to 
the compressor. Probably not the dryer, definitely not the TXV.

IF it were mine (and before the EPA cared about such things),  I would 
dump the charge and pull another vacuum on it. With the compressor and 
engine off, charge a pound of liquid refrigerant into the high side 
only. Within a few seconds the low side pressure should smoothly 
increase until it equalizes with the high side. If it doesn't, 
something's blocked.

> Smitty says:  I am changing my wagon system over from 12 to 34.  I have a new comperssor and dryer.  System has been flushed and air dried.  Expansion valve has been removed and cleaned.  System was made up of junkyard parts except for the evap which is Early Corvair.  It worked fine on 12 till last summer.
>   Upon charging systen it was drawn down to 28-29" which it held without loss for a half hour.  Charging it, I can only get about a can and a half of 34 in it and the compressor locks up.  Belt is a little too tight if anything.  IDEAS ???