Goughary

Has anyone found a suitable replacement bearing for the alternator fan hub?
17 Id x 32 od x 14 w

It's a dual row bearing and I can't find a good one anywhere. I hate to spend 150 for a new hub when I can just buy a bearing and press it in...diy to follow if I can find the bearing.

justin-in-athens

The short answer is no. The reason I say that is because I have heard of folks usint (2) 7mm bearings in place of the standard 14mm that comes in the oem hub. The problem with this (from and engineering perspective) is that all the axial load is placed on the outer most bearing, and not distributed to the second unit--thereby shortening its lifespan considerably. To further answer your inquiry, as of yet no one I know had sourced the original INA unit or like dimensional bearing.

John McM

Good to understand the rationale. I ended up having to buy a new fan which comes with a hub, so I had no choice in the matter, but I have a spare hub as well if my other car needs it at some stage.

Bruizer

I'm not sure if Accurate Bearing would be able to help source the bearing you need, but they help a lot of people restoring old wood and metal working machines. It might be worth a call.

JasonAndreas

Do you have the INA part number or that exact dimensions? It wasn't a problem to source the dual-distributor bearings once I located the part number and these shouldn't be any different.

Goughary

Jason. When I get ahold of a spare fan hub, I'll pull that number.

It has to be possible for us all to not have to spend so much for the entire assembly...when it's just a bearing. Porsche can be so ridiculous sometimes...

Navaros911

Haven't posted in a while, but time returned and I can add value to the community once more.

I pressed the bearing out of my fan just two weeks ago... and had it easily accessible... so here are all 3 numbers that appear on the bearing:

INA 0045

14 H 0531

LD 17/32 2RSR AH04

JasonAndreas

I just requested a quotation so we'll see what happens.

Navaros911

Hope it's better than these tiny bearings for the AC interior blower motors... those puppies were $45 EACH... and they're not even made from gold 😉

JasonAndreas

You could always swap them out for bushings like they used in the rear blower motor.

964Andrew

I had tackled this issue just 2 weeks ago. Having no luck sourcing the fan bearing as well as having the bearing hub being upgraded once before to non serviceable unit I opted to do single hub conversion. Looks better in my opinion, and its easier to service if the belt goes. Some mentioned battery charging light will come on at idle but I have not experienced such thing.

Thanks!
Andrew

Goughary

Next question is how to remove the seemingly unremovable snap ring.

964Andrew

Dremel

Thanks!
Andrew

onceover

Any updates on this?

I'm doing my alternator soon and would like to swap the bearing at the same time.

Goughary

Looks like a demel is the way - I don't like this solution to getting the bearing out.

That said, the early cars had a proper removable snap ring, so if you happen to have an old hub, yu are good to go!