Tfrank59
Member
Posts: 1364
'98 Tourer
Western Washington
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« on: January 08, 2019, 10:41:35 AM » |
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After I start moving, for a second I hear the sound of my front brake pads rubbing until I reach maybe 10 MPH. I've checked if the rotors are getting hot, they're not, so I've not done anything about it. I changed front brake pads last time I did the front tire, which was around 1 yr and 11K ago. Pads aren't worn much--around 65% still to go. Is it most likely just dirt in there, maybe keeping the pistons from retracting like they should? Is it something I should address?
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-Tom
Keep the rubber side down. USMC '78-'84
'98 Valkyrie, ‘02 VTX 1800, '96 Royal Star, '06 Drifter, '09 Bonneville, '10 KTM 530, '04 XR 650, '76 Bultaco, '81 CR 450, '78 GS 750...
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Leathel
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« Reply #1 on: January 08, 2019, 10:50:30 AM » |
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dirt/corrosion builds up behind the dust seals...they should be looked at, new seals are not that expensive Recently replaced mine and they are sweet now  |
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flash2002
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« Reply #2 on: January 08, 2019, 02:55:28 PM » |
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If you can, raise the front and spin the wheel and see if there is lots of drag. It's normal that the pads touch a bit, they will make some rubbing sound as long as they are not dragging hard. If it's hard to turn the wheel, it might be time for a caliper job.
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Tfrank59
Member
Posts: 1364
'98 Tourer
Western Washington
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« Reply #3 on: January 09, 2019, 08:15:19 AM » |
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If you can, raise the front and spin the wheel and see if there is lots of drag. It's normal that the pads touch a bit, they will make some rubbing sound as long as they are not dragging hard. If it's hard to turn the wheel, it might be time for a caliper job.
yeah this is a good idea. I'm pretty sure I'm going to find that it spins freely but what bothers me is it's a new condition. It never used to rub like that before so maybe who knows it is time for a caliper job |
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-Tom
Keep the rubber side down. USMC '78-'84
'98 Valkyrie, ‘02 VTX 1800, '96 Royal Star, '06 Drifter, '09 Bonneville, '10 KTM 530, '04 XR 650, '76 Bultaco, '81 CR 450, '78 GS 750...
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Valkyrie0002
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« Reply #4 on: January 09, 2019, 12:04:18 PM » |
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My fronts were sticking this spring. I found corrosion and goo inside the calipers. Cleaned them up and installed new seals- good as new.
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Been riding since about 1985. 1st bike was a CB900F then 88 CBR1000 , 1990 VFR750F and 94 CBR1000F. I bought my 2000 Std. Valkyrie new in 01. Was an MSF Rider Coach for 12 years. New owner of a 2014 Valk, Red, Non ABS.
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BINOVC
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« Reply #5 on: January 09, 2019, 01:23:24 PM » |
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X2. Just did mine (also the rear) a couple months ago. FWIW I noticed that the sticking pistons stuck worse as the temps went down (ie below 50-ish).
I had previously just extended the pistons (without actually removing from caliper) and cleaned them.
This time I replaced the seals, and thoroughly cleaned the seal grooves. Got a lot of crud out of the grooves.
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RWhitehouse
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« Reply #6 on: January 11, 2019, 01:42:54 PM » |
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Yep. Recently noticed this on my '98 with about 40k miles. After a front tire change the pads were extremely difficult to retract, had to use a c-clamp. After that I noticed the front brakes dragging and the lever felt particularly wooden.
Rebuilt the calipers and all good now. The lever has much more feel and a bit more travel, since the pistons actually retract like they're supposed to now. The hardest part was getting the pistons out. Really really sticky. There was lots of corrosion and crud behind the seals, and the outer dust seals were kind of chewed up. A dremel with a small wire brush wheel worked excellent for cleaning out the grooves in the calipers.
You can buy rebuild kits, but unless the pistons are pitted/corroded or otherwise damaged all you really need are the seals. However on mine one had a rounded off bleeder, and the other the pin that holds the pads stripped out and ended up having to drill- EZout it to get it out, so I got kits that included new pins and bleeders. All 3 calipers are identical.
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Jimbrew
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« Reply #7 on: May 09, 2023, 04:04:48 PM » |
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Do you have any links for parts to share for rebuilding these calipers ? I have exactly the same issue. The bike is a 1999 Tour quickly approaching 40K. Thanks Jim
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RonW
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« Reply #8 on: May 10, 2023, 05:08:24 AM » |
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The OP's issue was with the 'front brakes.'
I would inspect the brake pistons before buying a rebuild kit. Remove front caliper and squeeze the brake lever to examine the pistons' movement. Of course insert a paint stick or plywood against the pistons so they don't fly across the garage. Perhaps all that's needed is cleaning the pistons. Another culprit is old brake fluid.
Do not shove the pistons back into their bores before cleaning off the ring around the collar and other debris on the outside barrel of the piston. I knew somebody who did that and his brake seals started leaking.
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2000 Valkyrie Tourer
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