What is the pressure to recharge with R-134a?

Here is a guide that will help with this:

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

When you refill these systems you need to fill based on capacity for Freon and oil.

Below is the spec for this system. Basically you need to pull the system down to a vacuum so that it is empty and then fill this amount of Freon and oil if you replaced parts.

Then when the system is full the pressure should read correctly based on ambient temp. I put a diagram below for this as well.

Let me know if you have questions. Thanks