thats why you just do the labor and pay a shop to use the recharge machine. puts right amount of oil and freon from the start. but i would pull my on vacuum before. just incase you forgot a oil ring
AC problem - what does this reading mean?
Discussion in 'Freightliner Forum' started by PermanentTourist, Mar 23, 2020.
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At least I got real good at changing the condensers. I can do it in a 30 minute break now, including recharge.truckdriver31 and 86mechanic Thank this. -
A lot of good points but I will add a few:
When a compressor goes bad it often puts trash though the entire system. If you have a continuous tube condenser it can likely be flushed out. If it was updated to a manifold type they can never be flushed out. Trash will work out over time and crash your new system. Dryers and accumulators have a limited capacity. Recommended to be replaced any time the system is open. They collect moisture and are also a filter.
Expansion valves do not go bad often but they are very difficult to back flush. If you do not flush the entire system you do not know how much oil is in the system. What type of oil and other additives are in it.
If you do not take your new compressor, turn the outlet down, rotate it to pump all the oil out you do not know how much oil is in your system. Never trust the label.
Thank all systems take at least 8 OZ. Sleepers require a bit more than day cabs. Those old Fredidare compressors with a sleeper took about 15 ounces. Really need to know the amount for your application. It can really affect cooling.
I always put a shot of dye in. Not arguing with anyone but do not thank it hurts anything. Sometimes it makes it easy to find a problem.
Just my opinion and good luck with your A/C.Expeditor, 86mechanic and truckdriver31 Thank this. -
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