Author Topic: 85 250r rear brake sticking (Read 4078 times)

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

thesmith87250r · « **Reply #1 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

broken1 · « **Reply #2 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.

96motorhead · « **Reply #3 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

thesmith87250r · « **Reply #4 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

96motorhead · « **Reply #5 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.

pantera1975 · « **Reply #6 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