Just bought ATE PowerDisc front rotors to replace my OEM ones which have been on the car for 37k. The right-front rotor is stuck to the hub and I can't seem to get it off. I tried spraying it with WD-40 to loosen the rust and I tried lightly banging on the rotor with a mallet but it wouldn't budge. I'm thinking I'm going to have to have it pulled off with some sort of puller device.<p>Any ideas before I give up (I don't have a puller)? I was thinking about maybe trying to cut through the rust where the hub meets the rotor...perhaps with a small chisel.<p>Any help would be greatly appreciated.<p>Andy Hedin

overnight with penetrating oil and keep tapping it all around with a hammer like you are doing already. Good luck.

I've tried hammering (w/ a wood block). WD-40. No help. Luckily, my dad has a drum brake puller (3 prongs, and a screw-in center pin). Even with that, it took quite a bit of effort to pull the original disk out. I wouldn't do too much hammering (or tried jamming a flat head screw driver btw the hub and disk). It may ruin the bearings (maybe?). You will definitely need some sort of puller/extractor thing to help. <p>BTW, there isn't a reverse set screw on these disks. <p>Good luck... and yes, it can be very frustrating.<p>Cris<br>

Andy, I replaced the rotors on my old Coupe Quattro at about 75K, don't remember any major problem. Then again, I used a 32 oz. ball-peen hammer and gave the rotor some good shots, as I remember along the cylindrical surface between the wheel/hub flange and the rotor surface, but close to the hub flange. I wouldn't be too worried about hammering hard; the bearings are designed to take drops into potholes or hitting curbs without disintegrating. And the rotors are going in the trash once they're off (right?).<p>I would avoid the chisel; too big a chance of damaging something you don't intend to.<p>Keep letting it soak in WD40, then clobber it like you're driving in a railroad spike.

I have new Mintex pads and am in the market for new discs to go along with the upgrade.<br>Where did you get your Ate Powerdiscs and how much?<br>Did you go with stock size and if so what is it? Any part number info?<p>Let us know what you think of the performance improvement.<br>I'm particularly interested in wet braking improvement.<br>TIA!<br>Dave<br>'97 1.8TQMS wett

I just changed my rotors out this weekend to Zimmerman crossdrilled rotors. Yes, they were quite difficult to remove. At first the rust made it seem as the rotor was part of the hub. I sprayed CRC 5-56 between the rotor and hub. Let it soak for 5 minutes. Then I gave it a few hard whacks with a Stanley polypropolyne mallet (not a rubber one) and they loosened. Don't be shy as the bearings surely take harder blows from road bumps than you'll be able to whack it.<p>Good luck,<br>Jerry

on the rotor and tap the rotor hub gently with a hammer. Rotors ussually pop of (with lots of noise) quickly. Don't forget to wire brush/sand the hub surface before you put the new rotors on. Also, I use a high temperture grease between the rotor and the hub to prevent them from rusting together again. Good luck

Hit it HARD with a big hammer. That`s how we do it in the shop.Remember HARD.Works everytime and you won`t do any damage.

Here's an email I received from them. I paid $53 for each front rotor...and they are stock size.<p>Andy Hedin<p>----Original Email from Adirondack----<p>Hi Andy:<p>At 11:10 AM 6/8/99 -0400, you wrote:<br>>I'm interested in new front rotors for my 1997 Audi A4 1.8T. I've already<br>>swapped the stock pads for Rofren's front and rear about 6,000 miles ago but<br>>I'd like to improve the braking a bit more and since I've got about 36K<br>>miles on my car now, I figure I might as well get new rotors. I don't do any<br>>track events but I drive pretty aggressively on the street. Do you think the<br>>ATE PowerDisc (slotted) rotors would be a good choice for me or would you<br>>recommend the Zimmerman cross-drilled rotors?<p>The PowerDiscs will be an improvement over stock but will<br>not offer the level of fade resistance that the Zimmerman's will. <br>It's really a matter of personal preference, you're probably<br>the best judge of just how hard you drive. The PowerDiscs<br>are nice for normal to mildly aggressive driving, the Zimmermans<br>more for mildly aggressive to aggressive.<p>>If you could let me know if you have these rotors in stock I'd appreciate<br>>it. If so, I'll send you a fax with my credit card number and shipping<br>>information.<p>I have both in stock at the moment. Please let me know<br>if you need any more info or wish to order.<p>Mark<br>Adirondack Auto Brokers<br>www.germanautoparts.com<br>Order toll-free 877.4.GERMAN<br>Tel. 518.882.6534<br>Fax. 518.882.1914<br>VW/Audi/Porsche Parts<br>

Hit the lower edge of the rotor from the inside driving it away from the car.P.S. I`ve seen them hit w/ 4lb. sledge and never seen a bearing damaged.