disco_al Posted November 7, 2011 Share Posted November 7, 2011 help! having now got the right pad fitting kit, made new lines, checked for fluid leaks etc i cannot get the front brakes to bleed. have tried both methods, pipe in bottle of fluid, and the good old push pedal, open nipple, close nipple etc...and neither method has worked. basically we have done; changed calipers for vented defender 110 items new rigid lines from flexi to caliper now, just before i did a basil fawlty and beat seven shades out if it with the nearest tree branch, i noticed bubbles rising in the master cylinder. it's my 97 300tdi with abs need to get it sorted by tomorrow night, other half needs her bike back for work Quote Link to comment Share on other sites More sharing options...
Les Henson Posted November 7, 2011 Share Posted November 7, 2011 Could be master cylinder seals. It's quite common for brake cylinders to suck in air without leaking any fluid until the seals wear more and then lose fluid. It's quite unusual for calipers to leak, but not unheard of. I would expect a drained system to put bubbles into the reservoir, in much the same way as the clutch does, but this is indicative of the system eventually working. Pop the dust cap off the master and look for a small amount of fluid in there. Les. Quote Link to comment Share on other sites More sharing options...
disco_al Posted November 8, 2011 Author Share Posted November 8, 2011 according to the previous owner, it's had a new m/cyl fitted (and from the look of it and the really clean fluid that's in there, i don't have reason to not believe him) system hasn't been drained, just the front calipers and rigid lines replaced. going to try an eezi bleed kit tonight, see if that helps Quote Link to comment Share on other sites More sharing options...
moose Posted November 8, 2011 Share Posted November 8, 2011 Not being funny but you did put the new calipers on the right way up with the bleed nipple on the top etc.... also there is a right way to bleed the rovers with abs have a search on here for the procedure. Last time i did a range rover with abs it was a real pain and it took hours to get a good pedal. Quote Link to comment Share on other sites More sharing options...
disco_al Posted November 8, 2011 Author Share Posted November 8, 2011 Not being funny but you did put the new calipers on the right way up with the bleed nipple on the top etc.... only one way up that these can go, otherwise the pipe would be touching the inside of the wheel Quote Link to comment Share on other sites More sharing options...
fozsug Posted November 8, 2011 Share Posted November 8, 2011 Eezi bleed worked for me Quote Link to comment Share on other sites More sharing options...
davek0974 Posted November 8, 2011 Share Posted November 8, 2011 Just done this to mine, have your calipers got three nipples each? If so the inner two are bled together first then the outer one on its own. I had to re bleed mine after a day to get a pedal. Quote Link to comment Share on other sites More sharing options...
Tanuki Posted November 8, 2011 Share Posted November 8, 2011 My trick to difficult-brake-bleeding issues is as follows: Pump the pedal like crazy until it goes hard. Wedge it down with a piece of wood between the pedal and the seat-box. Leave overnight. Then repeat the bleeding-process. How it works: The solubility of air in brake-fluid increases significantly when it is under pressure. Wedging the pedal down and leaving it for a while under pressure means any trapped airbubbles will diffuse and dissolve into the brake-fluid. Then you bleed-out the aerated brake-fluid the next day. Trust me - it works! Quote Link to comment Share on other sites More sharing options...
disco_al Posted November 9, 2011 Author Share Posted November 9, 2011 well, disaster struck last night. dropped the pressure in my spare wheel to 15psi, connected it up, and it blew the reservoir wide open (instructions say no more than 20psi). so new reservoir/master cyl on order today. Quote Link to comment Share on other sites More sharing options...
Les Henson Posted November 9, 2011 Share Posted November 9, 2011 Old reservoirs must weaken with age. I blew a LTWT one wide open on 12psi Les. Quote Link to comment Share on other sites More sharing options...
disco_al Posted November 9, 2011 Author Share Posted November 9, 2011 Old reservoirs must weaken with age. I blew a LTWT one wide open on 12psi that was my suspicion too. previous owner said he'd had a new one fitted, but i don't think the reservoir was replaced - it split round the plastic welded seam. makes me wonder if it was a britpart m/cyl i may end up changing the whole thing for peace of mind - will see what turns up from BM today. Have booked Friday off to finish the job - going to change the rear pads/calipers/discs & bearings as well and bleed the whole system to be sure. (they were on the cards anyway) Quote Link to comment Share on other sites More sharing options...
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