V70 Air Con: Blower fan vibrates

[waggie]

Good afternoon all, Just had my screen replaced by autoglass, and now when the heater blower runs there is a terrific vibration type noise, I'm thinking of contacting autoglass and asking them to inveterate this, as prior to the replacement screen there wasn't any problems with the blower fan.
Should I investigate the problem first, I'm wondering if there is screen adhesive or even body fixings down there.
Any one know how to remove the blower fan?

[oragex]

Did they remove the plastic grid, outside at the bottom of the windshield? They might have dropped something (like a screw) inside which went to locate right on the cabin blower fan. It can unbalance the fan and create vibrations. The only fix would be to remove the blower from under the dash (a 1.5h job) and clear the blades.

[Clan]

Originally Posted by oragex

Did they remove the plastic grid, outside at the bottom of the windshield? They might have dropped something (like a screw) inside which went to locate right on the cabin blower fan. It can unbalance the fan and create vibrations. The only fix would be to remove the blower from under the dash (a 1.5h job) and clear the blades.

you dont need to do that , just take off the winscreen lower plastic panel which the wiper spindles go through and you can look down into the fan and see what is stuck in the blades ... leaves , plastic bags , etc may be the cause . If you are on recirculation the fan acts like a big vacuum cleaner when on full speed and will suck up a bag off the floor .

[voivodata]

I just changed my blower due to vibrations and noise, bearings are worn. It is very hard to recycle the fan. buy new and replace. replacing is simple, just remove the glove compartment.

[waggie]

Originally Posted by oragex

Did they remove the plastic grid, outside at the bottom of the windshield? They might have dropped something (like a screw) inside which went to locate right on the cabin blower fan. It can unbalance the fan and create vibrations. The only fix would be to remove the blower from under the dash (a 1.5h job) and clear the blades.

Yes they did remove the grid, this is why I suspect that there's something in it. will remove the fan an check.
Thanks for the information.

[waggie]

Originally Posted by Clan

you dont need to do that , just take off the winscreen lower plastic panel which the wiper spindles go through and you can look down into the fan and see what is stuck in the blades ... leaves , plastic bags , etc may be the cause . If you are on recirculation the fan acts like a big vacuum cleaner when on full speed and will suck up a bag off the floor .

That's certainly worth a look, prior to stripping out the fan assembly.
Thanks for the information.

[oragex]

Originally Posted by waggie

That's certainly worth a look, prior to stripping out the fan assembly.
Thanks for the information.

Great tip from Clan. Definitely go this way, as removing the blower is quite more hassle.