fastpakr
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V8 Engine Swap
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- Joined
- Aug 6, 2007
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- 8,015
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- Location
- Roanoke, VA
- Vehicle Year
- 1999
- Make / Model
- Ford
- Engine Type
- V8
- Engine Size
- 5.0
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
- Tire Size
- 285/75-16
Hoping somebody can clarify a few points now that I'm done reassembling the A/C system in my Ranger with the engine swap...
The old 5.0 compressor was locked up tight (looked like the pulley bearing died). I purchased a new compressor, orifice tube, accumulator, and condenser. Both hoses have been sprayed out with brake cleaner, blown out with compressed air, and o-rings have been replaced. After reassembly, I hooked up the vacuum pump and gauge set last night and vacuumed things out for about an hour, then left the gauges hooked up. As of this morning, the system seemed to be holding a steady vacuum.
Now it's time to deal with charging it back up. I know the entire system holds 9 ounces of oil, and there will be a label on the compressor indicating how much it was shipped with. Assuming the evaporator hasn't been drained of its own oil, I need to account for an empty accumulator, condenser, and the two hoses. Does 4 ounces of oil seem like a reasonable quantity?
Next question - where and how is the best way to add that? I'm assuming I can just equalize the pressure by pressing the low side shrader valve fitting. Can I just remove the valve core with a tool and carefully pour that much oil in, then reseat the core and vacuum the system down before adding freon?
The old 5.0 compressor was locked up tight (looked like the pulley bearing died). I purchased a new compressor, orifice tube, accumulator, and condenser. Both hoses have been sprayed out with brake cleaner, blown out with compressed air, and o-rings have been replaced. After reassembly, I hooked up the vacuum pump and gauge set last night and vacuumed things out for about an hour, then left the gauges hooked up. As of this morning, the system seemed to be holding a steady vacuum.
Now it's time to deal with charging it back up. I know the entire system holds 9 ounces of oil, and there will be a label on the compressor indicating how much it was shipped with. Assuming the evaporator hasn't been drained of its own oil, I need to account for an empty accumulator, condenser, and the two hoses. Does 4 ounces of oil seem like a reasonable quantity?
Next question - where and how is the best way to add that? I'm assuming I can just equalize the pressure by pressing the low side shrader valve fitting. Can I just remove the valve core with a tool and carefully pour that much oil in, then reseat the core and vacuum the system down before adding freon?
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