Hi all , need some help with my AC just as the tempreture sky rockets my AC has got a problem , everytime i turn my ac on i have a terrible noise which sounds like a bearing whinging and it is only present when the ac clutch is ingage . HELP!!! is there a bearing behind the clutch and pully and is it changable in the car ?
A/C clutch has a couple of bearings in it, both replacable in car. But it may also be a compressor problem.
yep sounds like ur air con compressor. yes u can change that with the eng still in the car... check ur belt first aswelll
Is there a thread that can help me doing i am mechaninclly mind just need a guide also anyone know where other then nissan i can get the bearings ?
try a bearing centre ,there about 60 percent cheaper then genuine and there useally from the same bearing company,
Depends on the kind of noise it is making. *A high pitched squeal with the A/C on (clutch engaged) will be indicative of a loose auxiliary belt. *Constant loud squeal as soon as car is running is siezed compressor *Other noise when A/C is on is indicative of compressor. Helpful diagnostic in manual suggests that "replace compressor" if this is the case. Does not give any further component diagnosis. Only bearing shown is within the clutch assembly, which can be removed without having to remove compressor from car. A bearing shop (CBC for example) wont be able to give you a bearing without being able to bring your existing one in as a match, or at least knowing the dimensions of it.
Thats great help1!!, its deffinately not a belt squeal its a bearing i am convinced now . just have to disessamble and remove bearing , thank you again Thank you
The pulley bearing is 40 x 62 x 24. It is a NSK 40BD219DUK. It is staked in the pulley so I guess it is not a press fit but you will need to remove the staking to get it out and then stake the new bearing in. The pulley is retained on the housing spigot by a circlip so its not too difficult to replace the bearing with the compressor in the car. The swash plate shaft bearings are needle rollers and are internal and so can not be changed without stripping the compressor. But if they are shot you can probably throw the unit away. Hope this helps
I just had a thought. I don't see how your noise can be the pulley bearing since the pulley is belt driven and so runs as long as the engine is running. When you switch the A/C on the clutch starts the compressor so if thats when the noise starts then it must be internal. If you replace the compressor you need to make sure the pipes are clean ie no metal dust/oil mix has migrated from the compressor otherwise they need to be flushed. Also check the condenser in case the contamination got that far. You should also replace the receiver/dryer. Hope this helps
