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| rear brake calipers locking up http://woodsbuggy.com/phpBB3/viewtopic.php?f=10&t=10230 |
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| Author: | rebarrail [ Wed Sep 08, 2010 8:37 am ] |
| Post subject: | rear brake calipers locking up |
I have a rail with a neal pedal assemebly and every so often my brakes start sticking then finally pretty much lock up....then i have to crack one of the bleeders on the calipers..it doesent matter which calipers i use either.....any idea fellas thanks |
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| Author: | Odyknuck [ Wed Sep 08, 2010 8:42 am ] |
| Post subject: | Re: rear brake calipers locking up |
Master cylinder either hanging up in the bore or your linkage is adjusted up to far to let the piston come back pass the bypass port. Also if you have a residual valve it may be a 10 pounder and is to much for disk brakes. |
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| Author: | rebarrail [ Wed Sep 08, 2010 8:50 am ] |
| Post subject: | Re: rear brake calipers locking up |
thanks man thats a good starting point...they just starting acting up and its real anoying |
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| Author: | kydecoy [ Wed Sep 08, 2010 8:55 am ] |
| Post subject: | Re: rear brake calipers locking up |
sounds like a soft brake hose is calapsing and holding pressure on the caliper. Is it both side or just one. It also helps to pull the rubber boot back on the caliper piston and spray some anti-seze up in there. |
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| Author: | rebarrail [ Wed Sep 08, 2010 8:57 am ] |
| Post subject: | Re: rear brake calipers locking up |
Yea it is both sides...their both hanging up |
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| Author: | rebarrail [ Wed Sep 08, 2010 10:03 am ] |
| Post subject: | Re: rear brake calipers locking up |
well it looks like i dont have a residual valve but i do have to what looks like a pressure switch for the brake lights....could something in their be messed up? |
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| Author: | Odyknuck [ Wed Sep 08, 2010 11:43 am ] |
| Post subject: | Re: rear brake calipers locking up |
rebarrail wrote: well it looks like i dont have a residual valve but i do have to what looks like a pressure switch for the brake lights....could something in their be messed up? No, the "T" is straight thru. Did you check to see if the MC piston was returning all the way? |
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| Author: | rebarrail [ Wed Sep 08, 2010 1:37 pm ] |
| Post subject: | Re: rear brake calipers locking up |
It looks to be returning all the way...sooo i dont no...something so simple is being a pain in the neck |
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| Author: | Odyknuck [ Wed Sep 08, 2010 1:40 pm ] |
| Post subject: | Re: rear brake calipers locking up |
When it returns is actually resting up against the snap ring? And at the point is the play in the pedal? |
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| Author: | rebarrail [ Wed Sep 08, 2010 1:52 pm ] |
| Post subject: | Re: rear brake calipers locking up |
I would say it is up against the snap ring when it returns |
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| Author: | Odyknuck [ Wed Sep 08, 2010 2:20 pm ] |
| Post subject: | Re: rear brake calipers locking up |
Is there play in the Pedal, meaning the plunger rod has freeplay/ Its very posible that the piston is hanging up part of the time. They will do that when they get dirty. Take it apart and clean it. |
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| Author: | rebarrail [ Wed Sep 08, 2010 2:56 pm ] |
| Post subject: | Re: rear brake calipers locking up |
ok sounds good ....thanks for eveything man ..i will let u no what i come up with |
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| Author: | Odyknuck [ Wed Sep 08, 2010 3:32 pm ] |
| Post subject: | Re: rear brake calipers locking up |
While you have it apart you might as well put a rebuild kit in it. Food for thought. Also make sure there are no groves in the bore. It can be honed however do it very lighty especialy if its aluminum. |
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| Author: | kybuggy1 [ Wed Sep 08, 2010 6:33 pm ] |
| Post subject: | Re: rear brake calipers locking up |
Do you run a single handled cuttin brake? If there is no slack in the rods it will cause your brakes to lock up sometimes. |
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| Author: | rebarrail [ Wed Sep 08, 2010 6:48 pm ] |
| Post subject: | Re: rear brake calipers locking up |
yes i do run a single hand cut brake |
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| Author: | rebarrail [ Wed Sep 08, 2010 6:54 pm ] |
| Post subject: | Re: rear brake calipers locking up |
what do you mean by slack in the rods? im all new to this haha |
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| Author: | kybuggy1 [ Wed Sep 08, 2010 10:52 pm ] |
| Post subject: | Re: rear brake calipers locking up |
There should be just a little play in the handle before the rods are actually pushing on the plungers. They are easily adjusted by loosening the jamb nut, removing the cotter key and cross pin and shortening the rod by turning one of the clevises a half a turn. One way to check also is: when your brakes do lock up, will they unlock if you yank up n down on the cutter pretty strongly? Mine did the same thing, loosened one clevis half a turn n took care of it. |
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