A/c compressor- new clutch?
- Thread starter bigwinn
- Start date
Used to look after the a/c in the offices at Sanden a/c compressors . Lots of cars use their compressors and are rebadged . No idea what BMW use. They need to strip them clutches off to be able to strip the compressors that used to come in failed. As to 'if' you can buy as a separate item, then I cant say. But must be able to be dismantled. Is there a live feed going to the clutch to make it engage when switched on ?
Thrustyjust said:
Calsonic kansei
That’s the check tomorrow- 12v across it when engine is running and visual check to see if centre is spinning
Can’t find any google search based ‘repair kits’ for that brand bmw compressors before E90 models, so I’m thinking it’s a new or recon unit IF that’s the root of the issue
When you ask for cooling, the low pressure switch needs continuity to allow the relay that brings the compressor in to send power to the magnetic clutch on the compressor. If there is no power to the clutch then you will need to chase backwards. If it powers the clutch then the LP switch is made and all safety switches (High Pressure) is also fine.
Most compressors fail due to mechanical seal leaks more than total internal failure. Not unheard of though but rare. If a clutch fails, then garages usually just say it needs a compressor than try and resolve the mag clutch. Its just easier and by the time you decant the refrigerant and remove the compressor and strip and try and fix, its easier to fit a new one. The gas removal , pressure test and recharge is the same in time on both jobs. They can be complex but pretty clever on how they work .
On another note, you could put a live feed to the connection when the engine isnt running and check for a click or clunk of the clutch mech working. it wont do anything as the engine isnt running but will prove clutch actuation.
