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-   -   disc brake service? (https://www.bikeforums.net/bicycle-mechanics/583284-disc-brake-service.html)

enfilade 09-09-09 04:56 PM

disc brake service?
 
i've got hydraulic disc brakes at the moment. fairly new, i've done about 150 miles with them. just wondering when i should service them and what is done in a hydraulic disc brake service

also, is there anything i can spray onto the disc itself to increase the braking power?

i've been told to be careful not to get any oil on the rotor's when sprying the drivetrain. what about WD40 on the discs? would this have the opposite efect of oil, making the brake more powerful?

what are the consequences of this.. would it wear the pads down faster? ta for reading

Cyclist01012 09-09-09 06:09 PM

if you get oil on the brake rotors prepare for them to squeel like a pig

kycycler 09-09-09 07:03 PM

DO NOT,REPEAT, DO NOT use WD-40 on a bike. That stuff is mostly a solvent and a lube. As for the disk, use alcohol. At 150 miles your brakes should not need servicing. About all you can do to disks brakes is chance the pads when they get worn and bleed them when they get mushy. If the rotors get bent they can be straightened if not to badly bent.

MudPie 09-09-09 08:00 PM

Quote:

Originally Posted by enfilade (Post 9644752)
what about WD40 on the discs? would this have the opposite efect of oil, making the brake more powerful?

what are the consequences of this.. would it wear the pads down faster? ta for reading

The oils and residual products in WD40 will decrease the friction coefficient and act more like an oil than to enhance braking. WD40 should NEVER touch the rotors or pads.

For the most part, I find hydraulic brakes to be rather maintenance free.

Regarding basic disc brake maintenance:

1) check pads to ensure they're not worn, if so replace pads which is fairly easy to do.
2) wipe the rotor with rubbing alcohol occasionally to remove grime.
3) there's usually no need to bleed the system unless air enterred the system. Air will cause the levers to feel spongy. I have a set of Hayes disc brakes and I think it says to change the hydraulic fluid after xx year or xxx miles. I replaced the hydraulic fluid in the front about a year after I got the bike, but for the past 4 years, I haven't changed the hydraulic fluid in front or rear, and the systems still work fine.
4) check the bolts securing the rotor to hub and caliper to frame every six months or so. I've never found a fastener loose, but it's cheap insurance.

Wordbiker 09-09-09 09:37 PM

Read the manual specific to your brakes.

Most manufacturers recommend replacing fluid annually as it will break down with the heat of braking.

enfilade 09-10-09 05:39 AM

that's a big help, thanks. i dont have the manual for the brakes, i'll wait until they dont feel as powerful then check everything at once


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