Green200tdi Posted August 8, 2020 Share Posted August 8, 2020 Happens twice now driving the 110 and brakes are all fine then out of the blue loose pressure on the pedal pump it up away we go again, no loss of fluid if I have engine running hand brake on and push brake pedal hard and hold it doesn’t go to floor all wheels dry. any ideas? 1986 c reg 110 Quote Link to comment Share on other sites More sharing options...
crwoody Posted August 8, 2020 Share Posted August 8, 2020 (edited) Loose wheel bearing, allows the disc to run slightly off true while manoeuvring and forcing the pads to push the caliper pistons in. Edited August 8, 2020 by crwoody 1 Quote Link to comment Share on other sites More sharing options...
western Posted August 8, 2020 Share Posted August 8, 2020 I'd go with ^^^^^ check all your hub bearings for excess play. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 9, 2020 Author Share Posted August 9, 2020 Ok will do cheers Ralph you not on Facebook lately? not seen you on there. Quote Link to comment Share on other sites More sharing options...
western Posted August 9, 2020 Share Posted August 9, 2020 Hopefully a quick readjust will cure it, I've been on but not posted anything lately. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 10, 2020 Author Share Posted August 10, 2020 (edited) 12 hours ago, western said: Hopefully a quick readjust will cure it, I've been on but not posted anything lately. Well just been under 110 with Jack all wheels good no play, im guessing servo may be on way out servo pipe looks ok no cracks or that see how we go, The old fb has been very quiet of late And can’t stand that LR fb page 🙄 Edited August 10, 2020 by Green200tdi Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted August 10, 2020 Share Posted August 10, 2020 Servo shouldn't affect pedal travel, if it was faulty the pedal would get a lot harder to push not drop to the floor. Could be a flexi pipe ballooning or a seal in the master cylinder at a very rough guess, there's not much to bakes and if fluid's not leaking it can only be a few things. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 10, 2020 Author Share Posted August 10, 2020 (edited) 24 minutes ago, FridgeFreezer said: Servo shouldn't affect pedal travel, if it was faulty the pedal would get a lot harder to push not drop to the floor. Could be a flexi pipe ballooning or a seal in the master cylinder at a very rough guess, there's not much to bakes and if fluid's not leaking it can only be a few things. Yeah good point long time since I’ve had to diagnose brake problems 😂 will give it a look thank you 😊 I remember years a go if you fluid was disappearing and you had no leaks it was going in the servo and ending up in the sump or worse still burning with the diesel giving a smoke problem mind you that was back in the 80’s the FX4 London taxi’s will have the wife start the 110 and hold the pedal while I check the rubber pipes 😊 Edited August 10, 2020 by Green200tdi Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 10, 2020 Author Share Posted August 10, 2020 Ok all rubber pipes are good back and front no ballooning what so ever, so I’ll see how we go pop on a new master cylinder Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 11, 2020 Author Share Posted August 11, 2020 So 266 mile covered yesterday in the 110 no brake problems even in the London traffic, 👍 2 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted August 11, 2020 Share Posted August 11, 2020 New master cylinder ? Mo Quote Link to comment Share on other sites More sharing options...
Maverik Posted August 11, 2020 Share Posted August 11, 2020 7 minutes ago, Mo Murphy said: New master cylinder ? Mo As Mo says, internal failure in Master cylinder - odly that the first thing that came to mind, but not for anyone else going by the number of posts above. you could check it if you block all the ports with spare bleed screws and then pump the pedal - in theory it should go hard then just sit there or just replace. - in my experience master cylinder seem to have a shelf life anyway, whether they're working or not. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 15, 2020 Author Share Posted August 15, 2020 Going on from my last post are the Sailsbury axle rear drum shoes self adjusting? Quote Link to comment Share on other sites More sharing options...
western Posted August 15, 2020 Share Posted August 15, 2020 No. there are 2 adjuster on the rear brake backplates, one adjuster for each brake shoe. Merging this with the other brakes thread you posted. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted August 21, 2020 Author Share Posted August 21, 2020 On 8/15/2020 at 8:38 PM, western said: No. there are 2 adjuster on the rear brake backplates, one adjuster for each brake shoe. Merging this with the other brakes thread you posted. took up the rear shoes didn’t go up much tbh, so no leak of brake fluid, no ballooning of rubber pipes, both front wheel bearing are good, pipe to servo is good, master cylinder? Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted September 2, 2020 Author Share Posted September 2, 2020 Unable to find my brakes topic so here goes, so not loosing any fluid, on max mark, brake pedal is intermittent one minute it’s ok the next it goes down to the floor pump it up few times back to Normal, all Rubber pipes ok not ballooning out under pressure, min movement in n/s swivel housing, is this master cylinder? I’m at a loss why it would do this loose the pressure without loosing a drop of fluid🤔 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted September 2, 2020 Share Posted September 2, 2020 Yes, sounds like master. They leak past the seals internally so you lose braking effort, but don't leak and make a mess, so sometimes hard to be sure. Quote Link to comment Share on other sites More sharing options...
western Posted September 2, 2020 Share Posted September 2, 2020 Found it & merged new 'brakes' post in to the existing thread. Quote Link to comment Share on other sites More sharing options...
western Posted September 2, 2020 Share Posted September 2, 2020 could be leaking into the servo casing. pull the master cylinder away from the servo & see if any fluid is apparent. Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted September 2, 2020 Author Share Posted September 2, 2020 1 hour ago, western said: could be leaking into the servo casing. pull the master cylinder away from the servo & see if any fluid is apparent. This is what I’m thinking but there’s no loss of fluid it’s been at same Level not moved I’d love the level to drop then I’d know for sure, im really starting to think servo it self as it’s pressure? Quote Link to comment Share on other sites More sharing options...
Snagger Posted September 3, 2020 Share Posted September 3, 2020 It sounds like the master cylinder rather than servo to me, the piston seals not holding the fluid and allowing the fluid to pass the piston rather than be pushed by it. 2 Quote Link to comment Share on other sites More sharing options...
Maverik Posted September 3, 2020 Share Posted September 3, 2020 5 minutes ago, Snagger said: It sounds like the master cylinder rather than servo to me, the piston seals not holding the fluid and allowing the fluid to pass the piston rather than be pushed by it. Exactly what this man says - you get fluid just leaking past the seals usually due to a rusty/scored cylinder barrel, you wont see any fluid loss or level changes. 1 Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted September 3, 2020 Share Posted September 3, 2020 Master cylinder. Servo failure presents a very hard pedal with reduced braking effect. Mo Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted September 6, 2020 Author Share Posted September 6, 2020 On 9/3/2020 at 9:44 AM, Mo Murphy said: Master cylinder. Servo failure presents a very hard pedal with reduced braking effect. Mo it’s getting worse going right to floor every time now, I have ordered a new master cylinder be here this week will keep you all updated. 1 Quote Link to comment Share on other sites More sharing options...
Green200tdi Posted September 11, 2020 Author Share Posted September 11, 2020 Just to let you all know replaced the master cylinder all is now well brakes have returned to normal, thank you all. 4 Quote Link to comment Share on other sites More sharing options...
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