Pro6TEN issues.

[Awann99]

I recently converted my 72 k2500 to orginal AC using r134. I used a new Pro6Ten A6 compressor. Vintage air Parallel flow condenser annd drier. Everything thing else is new expect the evap core and POA valve which was changed to 27 psi.

I charged it with around 3 and half 12 oz cans of r134

My low side pressure is 55 high side is 250

It's blowing around 50 degrees.

It's 78 degrees outside with 85% humidity when I took these readings

The compressor needs to be super tight and then it still starts to slip after a few minutes. The belt size looks a little too wide at the top causing this. I'm going to get a 13/32 size belt and see if it helps.

Currently I can smell and see the belt getting burnt up when it slips.

So my question is does this sound like a failing compressor or just a belt squeal. Did I over fill the ac based on these readings. I feel like it should be colder.when the belt slips I can feel the compressor is hot to the touch. The only thing cold on the system is the POA line and evap core. It is sweating.

I also added 8 oz of PAG oil to the system before adding the r134.

Any help would be great. Thanks.