Did you disconnect the hoses from the fittings? You may have a leaky coil and need a sniffer (electronic) and some refrigerant and N2.

Clamp off the heater.

Excellent idea to flush with dry N2. This makes for a better vacuum process.

TXV sensing bulb is upside down. The entrance of the capillary should be pointed up to make sure liquid does not influence the TXV diaphragm. If I was doing this, I would change the TXV. The vertical line (left side of picture) is the input of the TXV. The TXV line at 3 o'clock position is the TXV o...

If you had a restriction, you would have a freeze up at the restriction point. Mist the condenser with a hose and see if high side psi drops. It may be that you have not enough refrigerant in the system and not enough air flow across the condenser. You can test the TXV operation by alternating placi...

test conditions are rpm 1500 doors/windows open, fan on high speed set for max cooling. Fords had eractic cycling switches back then. Make sure you have the correct charge in the system.

quite common. The plastic falls apart and breaks.

yes, you'll be fine.

This is exactly the reason I state a 30 minute vacuum is useless. As suggested, keep the vacuum going for a longer period of time. You may need to run vacuum for a few hours depending upon how much moisture is in the system and the quality of your equipment. On my own vehicles, I run an overnight va...

just put a decent cap on the low side and do not pull the charge just to change a schrader. Schaders are not the sealing but a cap is there for sealing.