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[Valentin]

Hello everyone,

Since I bought the car 2 weeks ago, it makes a buzz sound inside the climate control unit panel, where the sampler fan is located.

The fan is activated all the time from the moment you turn ignition ON, and it's quite loud.

Yesterday I removed the center dash panel to access the fan and eventually change the 5 bulbs.

When I turn the fan with the hand it makes a tic tic sound that clearly shows the bearing is dead. What can I do to fix this? The thing is completely soldered and I cannot find any spare parts even on RS components website. If I can save it I would prefer, because it works. I will clean the whole PCB and then, is it possible to lubricate without damaging the circuits ?



I searched here if someone had the same issue, and I found some information :
- It's possible to replace the fan by another similar, but you need to solder the supply wire in another place of the PCB. I didn't find where? Maybe 2 of the 4 pins of the small PCB on which one the fan is located? How to remove the old one without damage ?

[Valentin]

Ok sorry I post twice but I just found out this is the same thing on a lot of BMW.

Found this guy having the same issue of noisy fan, the part number is the same except the last number (Opel/Vauxhall 9341704 051, BMW 9341704 050).

http://www.bimmerboard.com/forums/posts/204985

Well, I'll try one drop of bike chain oil in the center bearing and make a feedback here, maybe also make a full maintenance guide

[TheBoy]

Looking at the amount of dust on the fan, wonder if a drop of dry oil, like silicone spray lubricant, might be a better option on your current fan?

[Valentin]

I cleaned all the dust on the PCB and the black cover too.

Then applied a drop of bicycle chain lubricant on the axle, didn't make the noise disappear. Another drop on the side where the magnetic face sits near the coil, then the noise was gone !







Excellent video support from that guy also :
https://www.youtube.com/watch?v=W_-Q7ITIPvU&ab_channel=RCstagramJason%28Jinpyo%29

Great! Next issue now >>

[TheBoy]

Excellent news

Be aware that oils tend to attach dust and grit, hence suggestion to use a dry lube like silicone lube