924Board.org

garyj19 · Joined: 04 Sep 2005 Posts: 226 Location: Connecticut

Hi. I took off my front rotors and had them turned, and i also have new bearings. LIke the idiot i may be, i threw away the old bearings and dont reember how they went in, what size they were or where they went. Does anyone have any pictures of thier brakes apart and/or have an idea of where the bearings go?

Also, i looked at my new bearings and sized them up against the hole that they are supposed to fit in, and even the smallest one doesnt fit, becasue its too big. did my dad buy the wrong bearings? are they supposed to be like that (for any reason at all), or what?

What am i doing wrong? Please help me out.
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early 77 924 na

Smoothie · Posted: Thu Apr 13, 2006 8:36 am Post subject:

A-ha! I see you've cleverly left out the year and model of your car so we'd have to guess...
Well I guess 4-bolt wheels and I also guess you have at least a Haynes manual by now, so turn to page 202.
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

garyj19 · Joined: 04 Sep 2005 Posts: 226 Location: Connecticut

AHH im sorry. 77 924 n/a.
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early 77 924 na

Smoothie · Posted: Thu Apr 13, 2006 8:43 am Post subject:

Haynes pg.202 shows the assembly order.
You can use either :www.pelicanparts.com to double check the part numbers you got against what you're supposed to have, or download the PET .pdf from the top of General Discussions to do the same.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

garyj19 · Joined: 04 Sep 2005 Posts: 226 Location: Connecticut

thanks. i just think my dad ordered the wrong ones, or the company messed up. i found the part numbers, etc... and theyre right, so it may just be the wrong bearings. does anyone know what the diameter is supposed to be for the bearing? is it supposed to be EXACTLY the same size as the hole in the rotor?
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early 77 924 na

gohim · Joined: 02 Nov 2002 Posts: 4459 Location: Rialto, CA

Each wheel bearing is actually composed of two parts. They are the bearing and the bearing race. The bearing race is the size of the hole, and fits in snug. Infact you have to drive the old one out, and the new one in. I use a socket the size of the OD of the bearing race to make sure that it is driven in evenly.

The bearing race is driven in with the beveled face facing the hole, and the beveled side matches the beveled OD of the bearing. You need to pack the bearing with high quality grease (and the inside of the hub also) before you reassembly everything. Adjusting the bearings is easy, but critical to the life of the new bearings. Too loose, and the bearing will fail(they will come apart). Too tight, they will overheat, and the lubricant will run out and (then) the bearings will fail.

The larger bearing is the inner bearing (goes on first and closer to the strut) and the smaller the outer.

Make sure that you use new grease seals, the old ones get worn out, then get trashed when you punch them out to replace the bearings.