CNY_Dave
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Everything posted by CNY_Dave
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? "Annnnnyway, if the 'catch' seems to be about once-per-wheel-rotation when slowing down, and transitions from 'shake' to 'catch' as you slow, it's probably pad material deposition. Your description sounds just like my experience with pad deposition on the rotor. You might be able to sand the affected area or turn the rotor, but the hardened material actually extends below the rotor surface, and it will recur. If you're into taking it apart a bit to diagnose, you could pull the calipers and check that the pistons and sliders function correctly, and remove the rotors and look for what looks like a shadow of the pad. On mine it looked like you made a stencil outline of the pad and dusted the rotor (using the stencil) with charcoal. This particular problem is caused by getting the brakes hot and then stopping with the hot rotor against the pads, probably with the brakes on." Dave
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Ummm, what? I was the first responder on this thread, am happy to see you read the entire thread before replying. The spindle nut aspect is important because it's a fairly big scope change to include the spindle nut, given how difficult it can be to remove, and especially given how critical it is to the wheel bearing to torque it properly. Dave
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One of the reasons (well, almost the only reason) I bought mine from a dealer is that the car was sold at that dealer, serviced at that dealer, and the maintenance printout was fairly long and detailed. If you aren't getting that, yeah, a delaer has little to offer. I also didn't pay much or any more than the private seller price for mine, I think- subarus have a pretty high resale price up here where the AWD actually gets a fair bit of use. Private sale prices are close to the dealer price. Dave
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Heh, I'm in syracuse NY also (when at work, anyway). Annnnnyway, if the 'catch' seems to be about once-per-wheel-rotation when slowing down, and transitions from 'shake' to 'catch' as you slow, it's probably pad material deposition. Your description sounds just like my experience with pad deposition on the rotor. You might be able to sand the affected area or turn the rotor, but the hardened material actually extends below the rotor surface, and it will recur. If you're into taking it apart a bit to diagnose, you could pull the calipers and check that the pistons and sliders function correctly, and remove the rotors and look for what looks like a shadow of the pad. On mine it looked like you made a stencil outline of the pad and dusted the rotor (using the stencil) with charcoal. This particular problem is caused by getting the brakes hot and then stopping with the hot rotor against the pads, probably with the brakes on. Dave
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A breaker bar can indeed beat an impact if the nut (and what it is holding) can vibrate even just a little. It could be the impact with the tire on and the tire on the ground could be better than using the brakes. Most popes are about 5ft10, where to get a long one? Also, where does the handle from the breaker bar go? Dave
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I had a bad wheel bearing that droned while driving, for a while did not change while turning, and was undetectable by turning the wheel manually until I raised both fronts, put it in N, spun a wheel like heck, and then put my hand on the strut spring. Placing something on the strut (long screwdriver or socket extension) and folding your finger over the end and then sticking your knuckle in your ear magnifies whatever sound may be there quite a bit. Dave
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I got a new nut, and got all my parts from the dealer. Only bad part about re-using the nut (AFAIK) is if you need to stake it in the spot where it was staked before. What on earth could be different about the nuts? Same thread on both, axles are the same, hubs are the same, wheel bearings are the same as far as I can tell... Dave
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The preload is set when the two inner races contact each other as you tighten the axle nut. For me there were several-3-5 axle nut rotations that took a fair bit of torque, then the bearing races contacted each other, then the torque value was reached within 1/8 of a turn or so. Make sure you do not tighten the axle nut by putting weight on that wheel- the bearings can't see any load until they're fully preloaded. Have someone stomp on the brake pedal. If you're using a press make sure that what is taking the force is the correct part of the bearing/hub/spindle. I did mine last year, writeup is here somewhere. Dave