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Workshop => Suspension and Chassis => Topic started by: 96motorhead on November 05, 2015, 01:12:09 AM

Title: 85 250r rear brake sticking
Post by: 96motorhead on November 05, 2015, 01:12:09 AM
I have an 85 atc250r that I'm having a problem with the rear brake master cylinder.  When I press the brake lever down it sticks down until I pull the lever back up.  The return spring is fine and it doesn't require much force to pull back up.  It has done this for a few years, but i have always just pumped the brake a few times and it would work fine from then on out.  Does anyone know what parts I need to fix this or what causes this?  
Thanks
Title: 85 250r rear brake sticking
Post by: thesmith87250r on November 05, 2015, 02:06:16 AM
plunger or bore issue ? you can rebuild the master cylinder.  http://www.ebay.com/itm/Honda-ATC250R-83-86-REAR-Brake-Master-Cylinder-Rebuild-Kit-ATC-250R-1983-1986-/400777496593?hash=item5d50334811:g:8~EAAOSwniRWN-r1&vxp=mtr
Title: 85 250r rear brake sticking
Post by: broken1 on November 05, 2015, 02:28:23 AM
Sounds like your brakes just need a rebuild. Kits are pretty cheap & fyi shindy kits are the same as oem & less money. I think it was around 50-60 to rebuild the rear caliper & mc.
Title: 85 250r rear brake sticking
Post by: 96motorhead on November 05, 2015, 10:43:14 AM
It looks like some of the parts are discontinued like the rebuild kit.  I found a discontinued kit on ebay I'm gonna buy that and hope it fixes it.

http://www.ebay.com/itm/Honda-OEM-ATC250-Brake-Caliper-Repair-Kit-Obsolete-43520-965-305-ATC200X-/201457259929?_trksid=p2141725.m3641.l6368
Title: 85 250r rear brake sticking
Post by: thesmith87250r on November 05, 2015, 11:50:54 AM
I have a whole 85 atc in pieces  i took apart  recently  so i should  have the rear brakes  laying  around  if you're interested
Title: 85 250r rear brake sticking
Post by: 96motorhead on November 05, 2015, 12:31:34 PM
I bought that rebuild kit on ebay.  If that doesn't fix it I'll consider buying a new master cylinder.
Title: 85 250r rear brake sticking
Post by: pantera1975 on November 05, 2015, 11:01:22 PM
try removing your lever and make sure it moves freely and there is no rust in between the seals too