kinbelieveit Posted January 21, 2012 Share Posted January 21, 2012 I have no brakes even tho i have bled them a thousand times!! I have been told that because i have a disco rear dif with discs, that the original master cylinder and servo is not gonna do the trick. Is this the case? Because i have tried everything, i have bought a TD5 master servo off EBay. Will this just bolt on with just a few changes to the brake lines? Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted January 21, 2012 Share Posted January 21, 2012 swapping to rear discs isnt a problem, the mater cylinder etc will work fine. You've probably got air trapped still. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted January 21, 2012 Share Posted January 21, 2012 The standard master cylinder is the same right from 1991 all the through, whether 90/110 or drum/disc on the rear. Try clamping some hoses and seeing if you can isolate the issue to front or rear. Quote Link to comment Share on other sites More sharing options...
kinbelieveit Posted January 21, 2012 Author Share Posted January 21, 2012 When i brake at a set of lights and if i hold my foot on the pedal it will go to the floor! But when i bleed the brake lines on the drive it holds the presure! Do you think the diaphram has an air leak? Quote Link to comment Share on other sites More sharing options...
stuck Posted January 21, 2012 Share Posted January 21, 2012 You know your brakes are defective and your driving it on the road?! Quote Link to comment Share on other sites More sharing options...
kinbelieveit Posted January 21, 2012 Author Share Posted January 21, 2012 Not now no! Quote Link to comment Share on other sites More sharing options...
Eightpot Posted January 21, 2012 Share Posted January 21, 2012 Sounds like your master cylinder seals are worn. Quote Link to comment Share on other sites More sharing options...
Christophers1247 Posted January 21, 2012 Share Posted January 21, 2012 Are there any bleed nipples on the system that were hard to free off. done a disco the other day that the owner had tried to bleed his own brakes and got nothing. took me a while to find that the o/s rear bleed nipple was not sealing correctly so evey time i pumped the pedal it was just sucking air through the faulty nipple. just a thought. Ps required a new caliper to fix the problem. Quote Link to comment Share on other sites More sharing options...
kinbelieveit Posted January 21, 2012 Author Share Posted January 21, 2012 Well i changed all the calipers when i bought it 4 years ago. All the bleed nipples seem to be working ok as when i bleed them the oil comes out good! I just hope that the servo i have bought off ebay will sort the problem once and for all!! Quote Link to comment Share on other sites More sharing options...
jbs Posted January 22, 2012 Share Posted January 22, 2012 Do you by any chance have any wheel bearings out of adjustment?-the way to find this out is to drive it a little way and pump the brakes until you get a firm pedal-obviously off the road when you drive the vehicle. Quote Link to comment Share on other sites More sharing options...
sean f Posted January 22, 2012 Share Posted January 22, 2012 Wheel bearing is a good thing to check. With the vehicle stationary everything will be fine, once you start driving the play in the bearing will allow the disc to move side to side pushing the pads back further meaning when you brake again they have further to go and hence more travel on the pedal. Normally if it is bad enough to cause the type of symptoms you describe it will noticable as vibration driving as well but just in case jack each wheel and check for play, not a bad thing to do anyway. Quote Link to comment Share on other sites More sharing options...
kinbelieveit Posted January 22, 2012 Author Share Posted January 22, 2012 Funny you should mention that bacause i am getting a vibartion through the steering wheel too!! I have a post going at the moment. http://forums.lr4x4.com/index.php?showtopic=73940&hl=&fromsearch=1 I will check it out however i have checked the front wheel bearings last wk and although the near side had a slight notch when moved top and bottom, the far side had nothing. And it passed MOT the other wk!! Thanx guys. Much appriciated. I may fix two problems in one. Quote Link to comment Share on other sites More sharing options...
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