Drier for a Motorhome (Evans Tempco)

[Frankly]

So I had to remove the condenser to remove the radiator from out of a 1994 Ford chasis Motorhome. The shame was that the A/C system was working fine. I found a new drier and installed it. The only issue was the original drier had a brass valve on the discharge side that I did not understand its purpose. I tried to reinstall it as it came out on the new drier. But now that I have evacuated and recharged, the suction is running negative and the discharge is only about 150. I fear that this brass valve is creating a restriction. Should there ever be any valves around the drier, and if so, what would be their purpose? I am thinking about purchasing another drier and eliminating this device?

[DetroitAC]

Sounds undercharged, was the brass valve a Schrader fitting? Is this system using R-12? 1994 might have been R-134a, but being a motorhome, maybe not. Whatever it's using, you need to be able to evacuate well and charge the specified amount by weight.

Picture of the valve would get you an instant answer.

[Frankly]

Here are some shots of the brass fitting that I was referring to. It is located on the discharge of the drier and just upstream of the TXV/evaporator. It had a little plunger in it and may have other parts that I lost taking it apart. I let it drop to the ground as I was fiddling with the hoses. I guess I should have asked questions before reassembly?

20161215_204310 (400x225).jpg (72.31 KiB) Viewed 14412 times

[Frankly]

Here is the other picture.

20161215_204355 (400x225).jpg (65.73 KiB) Viewed 14412 times

[bohica2xo]

One of Ford's old dry break connectors.

Info from the old board - been a while since I posted that

http://www.autoacforum.com/messageview. ... adid=16459

Scroll down about 10 posts for pics & info.

You could eliminate it. It is probably not assembled correctly at this point.

[Frankly]

Thanks. I think I will try to remove it and recharge.