fresh air fan

[John Rogers]

The fresh air fan in our '74 914 will not start. There is power at the control switch, all three white/white+color wires have 12 volts and the contacts with the ground connection on the lever are good. I traced the diagram and it seems that the power means the relay is okay? Is ther anything else to check BEFORE I have to remove the gas tank to get at the fan assembly?

[Tim Polzin]

I had a similar problem with mine. It turned out the frame which held the brushes on the motor had broken. The only recourse was to replace the motor. You can check power at the plug to the fresh air blower without pulling it out. It would at least confirm power to the unit.

While the tank is out, I suggest lubricating the windshield wiper rack and replacing the stub hoses at the gas tank with long ones to allow you to remove the tank in the future without removing the bottom plate.

Good luck and have a few band-aids ready!

[Wayne 962]

We have these fresh air blower units here in good 'recycled' conditon for $45 each, if you need one...

Thanks,

Wayne

[John Rogers]

I hope no one thinks I'm nuts, but the fan started working today and has all the speeds??? It may be the brushes causing this unusual condition. I plan to pull the gas tank in the near future and will get one of your used fans if ours is messed up.
Thanks for the replys.