check the back of the compressor, they hide the there on the older models. volvodoctor
where is low pressure valve on a 2005 ford 500? i am trying to add freon
No, it should not leak freon because it is supposed to be a sealed unit.
The schrader valve on the low pressure side of the system.
The low pressure charging valve is on the accumulator........
The freon has to be removed and the pressure released from the ac system. Then the valve can be removed and replaced. The system will need to have a vacuum pulled and freon put in again.
Through the schrader valve on the low pressure side.
Low pressure line from the compressor (Larger hose)
Through the schrader valve on the low pressure side of the system.
The schrader valve located within the low pressure side of the AC system.
Freon goes into the low pressure side of the air conditioning system. The attachment from the gauge used to put the freon in will only attach to the low pressure valve so it would be pretty hard to do it incorrectly.
89 Volvo is R12(Freon).You need to go to a qualified tech to have it checked.A good idea is to have it converted to R134(have to have old R12 vacummed out first,and change charging valve)then you can refill yourself.but be aware,that the valve is behind the compressor,and not easy to get to.
Connect a Freon gauge and Freon can to the low pressure port. With the vehicle running and the ac on high, open the valve to let Freon in, stopping when the gauge shows full.