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Took the car up to my shop today and dug
out the r12 guage set (needed because of the fittings
left alone on the compressor) and found 175 psi on
the high side and 35 psi on the low side, text book
numbers. I loaded another ¾ pound 134a in and it cools a little better, but
still no screamin’ hell. I don’t know if
the ’58 compressor has that epr valve or not, ’59
service pamphlet mentions it ’58 doesn’t. Thanks for the advice so
far, don’t be afraid to chime in with your two cents worth. Ernie -----Original Message----- Hi Gang: Has anyone any experience with 134a
in these units? I replaced all the
hoses, pressure and flow tested the evaporator and condenser, replaced the
receiver dryer and expansion valve with R134a compatible parts. The cooling is
poor even though the line from the expansion valve to the evaporator is cold.
Here’s the kicker, the compressor is so cold that water is condensing on
it. Being a modern G* tech I’m
used to the compressor running hot as it compresses the gas, am I missing
something? Oh yeah the compressor is capable of
over 300 psi on the high side with the service valve accidentally left closed,
oops. The sump is filled with mineral
oil to the correct level and I put 6 oz. of ester oil in the gas side. I
charged it with enough refrigerant to clear the sight glass, like old For*s. Any ideas on this? Ernie and The Black Bitc_!! |
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