Help after a front brake job

namari · 08-21-2013, 02:41 PM

Just changed my front brake pads. The new ones were hard to put back on (yes, I pushed the piston back flush before putting the new pads in), and I had to sand them down a little to get them to slide on. Once on and torqued to specs, I pumped the brake, then took it out for a spin. Just a mile, but the whole time it felt like I was riding with my front brakes on. When I got back, the front rotor was piping hot too. Is this normal? With a few miles will the brakes wear down or loosen up a little? Or am I missing something? Thanks!

namari · 08-21-2013, 03:06 PM

I'm also concerned for the engine with the added stress of having to push a bike with the brakes engaged.

alantf · 08-21-2013, 04:26 PM

Quote:

Originally Posted by namari

the front rotor was piping hot too. Is this normal?

Whenever I park up and fit the disc lock, I make sure I don't touch the disc, because it's always hot, but I've never had brake drag after I've had new pads fitted. Did you lubricate the guide pins?

namari · 08-21-2013, 05:09 PM

No, the service guide didn't say anything about that. No doubt that the pads were slightly too thick. I should have sanded them down a hair more. Just wondering if leaving them the way they are and letting them wear down naturally is fine, or if it's going to harm something.

alantf · 08-21-2013, 05:51 PM

Never known replacement pads that were too thick, but I suppose it could happen. I think I'd be stripping them down again, lubricating the guides, and making sure that everything else was free and moving easily.

5th_bike · 08-21-2013, 11:38 PM

Don't you lubricate the two guide pins with vaseline? (please correct me if I'm wrong)

OldNTired · 08-22-2013, 12:36 AM

Quote:

Originally Posted by namari

No, the service guide didn't say anything about that. No doubt that the pads were slightly too thick. I should have sanded them down a hair more. Just wondering if leaving them the way they are and letting them wear down naturally is fine, or if it's going to harm something.

Just a thought. Your bike is 14 years old. Sometimes, with age, the brake line(s) will get soft
and colapse. This can/will prevent the fluid from going back to the MC and will keep pressure
on the caliper, causing the pads to press against the rotor. Have had this happen with a car.
If the hose feels soft, replace it.

**jonathan180iq** · 08-22-2013, 09:58 AM

I was thinking something along these lines too.

When is the last time you did a brake flush? It takes less than a bottle of brake fluid do a whole system flush and bleed on these bikes.
Lube the caliper slides, obviously. And then flush and bleed your brake lines. It sounds like there is air in the system, probably down at the caliper, and it's giving a false engage on the piston.

namari · 08-22-2013, 02:55 PM

Thanks for the replies everyone! Brake fluid was changed in 2008 and has been sitting since. It's nice a clean. I rode it around a little yesterday and the friction is starting to take some more material off the pads, loosening up the action a little. I should have just sanded the pads down a hair more on both sides, but had already returned my buddies torque ratchet.

**jonathan180iq** · 08-22-2013, 03:01 PM

I might be anal, but brake fluid from 2008 is too old for me, even if it's still pretty. I'm a once a year kind of guy.

08-21-2013, 02:41 PM	#1
namari Junior Member Join Date: Jul 2013 Location: Massachusetts Posts: 17	Help after a front brake job Just changed my front brake pads. The new ones were hard to put back on (yes, I pushed the piston back flush before putting the new pads in), and I had to sand them down a little to get them to slide on. Once on and torqued to specs, I pumped the brake, then took it out for a spin. Just a mile, but the whole time it felt like I was riding with my front brakes on. When I got back, the front rotor was piping hot too. Is this normal? With a few miles will the brakes wear down or loosen up a little? Or am I missing something? Thanks! __________________ '99 GZ250 Get on your bike and ride! Login or Register to Remove Ads
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08-21-2013, 03:06 PM	#2
namari Junior Member Join Date: Jul 2013 Location: Massachusetts Posts: 17	Re: Help after a front brake job I'm also concerned for the engine with the added stress of having to push a bike with the brakes engaged. __________________ '99 GZ250 Get on your bike and ride!
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08-21-2013, 05:09 PM	#4
namari Junior Member Join Date: Jul 2013 Location: Massachusetts Posts: 17	Re: Help after a front brake job No, the service guide didn't say anything about that. No doubt that the pads were slightly too thick. I should have sanded them down a hair more. Just wondering if leaving them the way they are and letting them wear down naturally is fine, or if it's going to harm something. __________________ '99 GZ250 Get on your bike and ride!
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08-21-2013, 05:51 PM	#5
alantf Senior Member Join Date: Nov 2008 Location: Tenerife (Spain) Posts: 3,719	Re: Help after a front brake job Never known replacement pads that were too thick, but I suppose it could happen. I think I'd be stripping them down again, lubricating the guides, and making sure that everything else was free and moving easily. __________________ By birth an Englishman, by the grace of God a Yorkshireman. Login or Register to Remove Ads
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08-21-2013, 11:38 PM	#6
5th_bike Senior Member Join Date: Oct 2007 Location: HoCo, Maryland Posts: 1,349	Re: Help after a front brake job Don't you lubricate the two guide pins with vaseline? (please correct me if I'm wrong) __________________ 2005 "Saturn Black", stock + tach
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08-22-2013, 09:58 AM	#8
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Re: Help after a front brake job I was thinking something along these lines too. When is the last time you did a brake flush? It takes less than a bottle of brake fluid do a whole system flush and bleed on these bikes. Lube the caliper slides, obviously. And then flush and bleed your brake lines. It sounds like there is air in the system, probably down at the caliper, and it's giving a false engage on the piston.
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08-22-2013, 02:55 PM	#9
namari Junior Member Join Date: Jul 2013 Location: Massachusetts Posts: 17	Re: Help after a front brake job Thanks for the replies everyone! Brake fluid was changed in 2008 and has been sitting since. It's nice a clean. I rode it around a little yesterday and the friction is starting to take some more material off the pads, loosening up the action a little. I should have just sanded the pads down a hair more on both sides, but had already returned my buddies torque ratchet. __________________ '99 GZ250 Get on your bike and ride!
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08-22-2013, 03:01 PM	#10
jonathan180iq Super Moderator Join Date: Jan 2007 Location: Dalton, GA Posts: 3,996	Re: Help after a front brake job I might be anal, but brake fluid from 2008 is too old for me, even if it's still pretty. I'm a once a year kind of guy.
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