Pardon my ignorance but, where is the expansion valve on a 84 300SD?

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO

You're not ignorant. It's hidden under the glove box.

Here is an excellent site for diesel maintenance:

http://dieselgiant.com/index.html

and the actual repair:

http://dieselgiant.com/repairyourac.htm

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

You can find ANY component in ANY refrigeration system if you understand the basic diamond diagram.

Think of the compressor as home plate. The high side leads to the condensor at first base, the expansion device at second base, the evaporator at third base and then back to home plate (the compressor.) Everything between home plate and second base is high side pressure and between second base and home is low side pressure.

Using this simple fundamental, you can follow the lines and find any component in the system and know whether to expect low or high side pressure at that point.

Thanks for tips and the references.

Cheers guys!

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1984 300 SD, 2 tank WVO
1996 Ram Cummins, 2 tank WVO,
2004.5 Ram Cummins, 2 tank WVO