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/cgi-bin/YaBB.pl General Category >> The Cafe >> Spin front tire forward good, spin back locks up /cgi-bin/YaBB.pl?num=1397082847 Message started by old_rider on 04/09/14 at 15:34:07 |
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Title: Spin front tire forward good, spin back locks up Post by old_rider on 04/09/14 at 15:34:07 Was backing up the bike and noticed it got hard to pull backwards and squeaked like the brakes were being locked up. IF I turned (while backing) left it got really tight, turn right , it eased up. So I stuck it up on a jack, spun it forward, like glass.... spun it backward, 1/2 rotation it started getting tight, 3/4 got squeaking, by one full turn in reverse it locked up....and took a lot of force to even move it backwards. What could it be? is there a spring set on the pads? Don't have time or in shape enough now to look further, so thought i'd ask what to check. Should I just jack it up and pull the caliper set off and clean up the pistons? and see if anything is coming loose? |
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Title: Re: Spin front tire forward good, spin back locks Post by engineer on 04/09/14 at 18:03:52 Quote:
That seems like a good place to start except I would check the wheel without the caliper and see if everything is OK before working on the caliper. I have seen bearings fail that would rotate fine in one direction but get jammed up in the other direction. If the wheel spins OK, you know it is the brake and go from there. And while the caliper is off you can spin the wheel and clean up the rotor with some very fine wet/dry paper. |
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Title: Re: Spin front tire forward good, spin back locks Post by Oldfeller on 04/09/14 at 19:56:14 Sorry, it's normal. There is momentum wedging that takes place when your pads hit your rotor when it is rotating forward normally (moves the locked pads forward in the pad holder). Wear and seat in in takes place in the "wedged forward" position. This is where your pads normally stay in normal riding. Clearance when your brakes come off is normally only a couple of thousandths per side, but all is well. Do it backwards (roll your bike backwards and hit the front brake lightly) and expect some noise and rub after that until you roll it forwards and hit the brake again a couple of times. The pads were freed up and getting wedged the other way in the holder for a bit and that new alignment and fit up takes up some of the tiny running clearance. Using rubbery stuff anti-squeal on the backs of your pads actually can make this worse as it takes up some of your clearance space making your brakes more "touchy" to the backwards rub situation. Think of it like this, you make seating grooves in that rubbery stuff when braking normally. Then when you apply the brakes backwards you move the pads in the brake holder recess all the way the other way and the leg forms and the cup circle don't hit the old rubbery grooves exactly right any more until you re-seat everything with some correct direction braking. Don't sweat it, as long as it "heals" with some correct braking it is normal. If it gets tight braking backwards and stays tight after correctly braking forward 3-4 times hard -- you got problems of another sort. But try it out a time or two and tell us what you got. |
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Title: Re: Spin front tire forward good, spin back locks Post by WD on 04/09/14 at 23:03:09 Grease the caliper sliders, grease the back of the pads, and chamfer the pad edges. Will clear it right up. It will still stick a bit in back up mode, but not as much. The Savage front brake is a micro version of those on a 1973 F100, needs the same tricks. |
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Title: Re: Spin front tire forward good, spin back locks Post by old_rider on 04/10/14 at 09:26:55 Will try that WD.. Not that I mind it much, but I don't like the fact that the brakes "self apply" when I back up the bike, my lower back is bad enough without having to use my legs to force it to back up in neutral with no brake applied. Thanks for the replies fella's, I will get to the removal soon as I can, I just hate working with any brake system. |
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Title: Re: Spin front tire forward good, spin back locks Post by engineer on 04/10/14 at 13:48:25 How about that, learn something new every day! My Savage never had that problem, so, something to think about. |
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Title: Re: Spin front tire forward good, spin back locks Post by Steve H on 04/10/14 at 17:48:07 I've never had a problem like that on a bike with disk brakes. How are the pads getting c0cked enough to grab and hold like that? |
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Title: Re: Spin front tire forward good, spin back locks Post by S-P on 04/10/14 at 17:56:41 2C0F0705060F0F0611630 wrote:
Thanks! My 2007 only has a little over 2000 miles and the front brake grabs and makes a creaking sound when I'm backing up too. It doesn't lock up but I do have to push a little. Good to know it's normal behavior. |
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Title: Re: Spin front tire forward good, spin back locks Post by WD on 04/11/14 at 00:19:36 My 98 was the same way, finally sold the wheel, gave Lancer the caliper, hose and master cylinder, and the bike has a drum older than I am on it. The 2003 front brake doesn't do that. But the rear brake seems to self loosen, and the idle speed screw resets itself at random. Oh well, it IS a Savage, nothing unexpected. Did drain a fresh T6 fill out today and put regular 15W40 Rotella in, too hot for 5W40 already. Dang bike sounded like a 2 stroke falling down a cliff with the thin stuff in it. |
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Title: Re: Spin front tire forward good, spin back locks Post by old_rider on 04/11/14 at 22:26:52 Our local wally world has 15-40w rotella on sale.... I put some T5 in it to clean it out.... might stop by and get me some plain stuff tomorrow if the 40w quiets it down, I am all for that |
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Title: Re: Spin front tire forward good, spin back locks Post by S-P on 04/11/14 at 22:46:03 5744000 wrote:
Ha. That might be why mine is so noisy. We're already at 100 degrees and I'm running 5W40. |
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