As far as i am aware lube for the drive (eccentric cam) is separate from the lube in the pressure system. That is the usual way aircon compressors are constructed. There are two chambers drive chamber and pressure chamber.
As far as i am aware lube for the drive (eccentric cam) is separate from the lube in the pressure system. That is the usual way aircon compressors are constructed. There are two chambers drive chamber and pressure chamber.
brianp38dse
Well-Known Member
Yes oil added in refridgerant, but will probably not stop the whine there is a sealed bearing in the clutch pully, if the noise stops when you turn aircon on its the bearing.
The oil in the refrigerant only services the upper cylinders and pistons. Oil MUST be put in the drive side of the compressor to lubricate the cylinders below the piston seals and the eccentric drive. That oil never sees the refrigerant.
JamesBB
Active Member
So all I can guess is the fluid leak I had was in fact some of the SP10 oil that does mix with the refrigerant. On top of that there is another very small oil chamber that lubes the cylinders. If the two are not interlinked then I am not sure why it is making a noise after losing oil from the refrigerant holes.
The noise is constant while the engine is running, AC on or off, clutch engaged manually or not.
The noise is constant while the engine is running, AC on or off, clutch engaged manually or not.
So all I can guess is the fluid leak I had was in fact some of the SP10 oil that does mix with the refrigerant. On top of that there is another very small oil chamber that lubes the cylinders. If the two are not interlinked then I am not sure why it is making a noise after losing oil from the refrigerant holes.
The noise is constant while the engine is running, AC on or off, clutch engaged manually or not.
Has the system been recharged? You should NOT be running the aircon compressor unless there is gas pressure in the system. There is nothing to return the pistons and the push rods may fall out of the cam. In other words you could destroy the compressor.
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JamesBB
Active Member
No, I need to re-charge it. I have not been running with the aircon on so hopefully I am ok as the clutch will not be engaged. Does the dual pressure switch inhibit the clutch engaging if there is no refrigerant?
Thanks
Compressor should not run with no gas in the system, pressure switch should make clutch open circuit. The tag on the compressor with oil need means it must be a piston compressor, which needs separate oil in the crankcase from the oil in the system. A scroll compressor uses the oil from the system for lubrication a piston compressor needs oil in the crankcase just like an engine. Buy yourself a cheap mechanics stethoscope off eBay you should be able to find the problem easily with that.
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JamesBB
Active Member
Compressor should not run with no gas in the system, pressure switch should make clutch open circuit. The tag on the compressor with oil need means it must be a piston compressor, which needs separate oil in the crankcase from the oil in the system. A scroll compressor uses the oil from the system for lubrication a piston compressor needs oil in the crankcase just like an engine. Buy yourself a cheap mechanics stethoscope off eBay you should be able to find the problem easily with that.
It has a Sanden TRS105 which seems to be a scroll compressor.
Ok just make sure it has the correct amount of oil in it before it is recharged. The place doing the recharge should know the score.
