beltandbraces Posted August 24, 2010 Share Posted August 24, 2010 1990 110 CSW 2.5TD (yes I know) so on the back of changing the rear pads, I bled the system and went round the block....the brakes had been spongy before and a blocked rear axle breather had seen a leak into the rear offside drum seeing to the last set of pads so I was expecting an improvement but as I stepped on the brakes, the pedal went 3/4 down and the brake light came on on the dash, the landy stopped well enough but I needed more force than with one oily rear drum! I am guessing the PDWA switch activated and showed an imbalance, this is the first time this has shown in the two years or so I have had the truck I tapped the pedal, light went out and I rolled off again, I stopped more gently and pressed the pedal, it still went 3/4 down but no light and the landy stopped. I did this again and pumped the pedal twice as I slowed, more pressure in the pedal and firmer feeling but as soon as I tried to stop again, no pressure and back to pedal 3/4 down. I have bled the system a second time, no obvious leaking signs in the drums or front pads, what am I doing wrong? If I brake gently/normally the brakes are acceptable but with more travel than I would like and if I brake then pump the pedal again during braking, I get a firmer brake and it feels like it should. The oil in the master cylinder reservoir is dark and black looking, despite two litres of fresh fluid going through, I have exhausted the vacuum with the ignition off and the pedal depresses when the ignition turns on so I assume the vacuum is good but with the ignition off, when I press smartly on the brakes, I hear a wheeze (2-3 seconds)as if air is being expelled. with the GUNSON pressure bleed kit attached and the engine running, I had more pressure on the pedal and no light if I stamped on the brake, remove the kit and put the regular cap on and little pedal pressure and warning lights, could this be master cylinder???? Any advice is gratefully received, I have scratched my head on this one, I have ordered a new master cylinder and seal kit but hope that it is simply something foolish I haven't done. All the wheels seem sound on their bearings and I haven't touched the front discs, only the rear shoes, and I haven't changed anything other than bleeding the brakes and then stamping on the pedal! Quote Link to comment Share on other sites More sharing options...
Nige P Posted August 24, 2010 Share Posted August 24, 2010 If you've drums on the rear (not clear as you initially mention pads), it sounds like they want adjusting. Quote Link to comment Share on other sites More sharing options...
beltandbraces Posted August 25, 2010 Author Share Posted August 25, 2010 Yep, rear drums and shoes and front discs and pads. I will have the drums off and check the cylinders at the weekend to see if I am losing fluid and I will check the snail adjusters again but I am scratching my head with this. It is a big change to the brake feel if all I did was change the shoes t the back and then just stamp on the brakes. I saw another thread which suggested that the rear cylinders might have to travel too far if poorly adjusted, do you think this might be the case? When I put the drums back on, I tightened the snails till the drum stopped then backed them off slightly, so I thought this was okay..... Quote Link to comment Share on other sites More sharing options...
Nige P Posted August 25, 2010 Share Posted August 25, 2010 Having to pump the pedal is a classic symptom of out of adjustment brakes. Just make sure the leading and trailing shoes are adjusted up and give pedal a press in between adjustments to settle the shoes. Nige Quote Link to comment Share on other sites More sharing options...
beltandbraces Posted August 25, 2010 Author Share Posted August 25, 2010 Nige, thank you for your common sense....it must be a right of passage when owning a land rover to feel a bit foolish from time to time. I had adjusted the brakes but the wrong way and NOT CHECKED them, I was racing along and trying to get the job done quick time. Snails now adjusted THE CORRECT WAY and the pedal feels like it did before I got all "overalls and mug of tea". That said, the pedal still feels a bit mushy so I suspect a weep from the cylinders and will check them this weekend. Still, I can stamp on the brakes and no warning light and the 110 stops like it should. Best bit of advice I can give is be systematic and use hose clamps to isolate the fault. Now, any advice on six year old daughters who insist I should paint the 110 pink? Quote Link to comment Share on other sites More sharing options...
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