BLOODY BRAKES

[banjo]

Ok so the wife goes & buys me a disco 1 .. YES she bought me one.. Anyway its always had spongy brakes & the 2 rubbers under the fluid resivor where leaking.. So I drained all the fluid & replaced the 2 rubbers & fitted all new brake pads.. Then I bleed the brakes CAR NOT RUNNING, & NON ABS & we gets a perfect pedal hard as a rock, Sweet.. So I start the car & the brakes are still SPONGY. So I jumps on the forum & read everything I could find & seems I am bleeding the brakes correctly . So I read on threw more threads , & someone had the same problem as me & was told it was the booster So I have gone out today & bought a new one. BUT I desided to rebleed the brakes again since the car has been started & moved , So I bled each nipple 5 times every nipple & not one bubble anywhere. So I starts the car again & still the same..I have checked all flexible hoses with the car running & not running theres no swelling at all so its not those.. So I will replace the booster tomorrow BUT I don't want to drain the system & rebleed it all.. So was wondering if anyone has changed out the booster without taking the master cylinder off. I am going to try but just thought someone here may have done it & can tell me about it.. When I built the green series I made the brake pipes a tad longer near the master cylinder just in case I ever needed to change out the booster.. Also the car is a 1992 3.5 EFI 5 speed. IS there anything else I should be looking for..So if anyone has any ideas what to look for now & anything else I should be looking at.. Also the brake light switch don't work properly as the lights stay on. I read someone has same problem so had a look at my switch it doesn't seem to be adjustable like what I read about so ill either need to replace or do what others have done & put a small screw in the end of it .. Anyway I hope use can understand my ramblings & whats going on.

Thanks for any help guys

Cheers Jason..

[banjo]

Oh yeah the car is registered & ive spend a heap on doing it up all so I can have a pretty garden ornament. So yeah need to sort the brakes..

Thanks Jason..




All pics I have are in the emmbaracement thread if use are interested . Bout 10 pages back from the end..

I'm starting to HATE this car so much & I haven't even had the chance to drive the bloody thing,,. GGGGGRRRRRRRRRRRR

[Dougal]

It's not the booster. A booster not working gives a hard pedal, not a soft one.

Have you taken it out for a drive? It could be your brakes are fine but expectations somewhat different.

[banjo]

It's not the booster. A booster not working gives a hard pedal, not a soft one.

Have you taken it out for a drive? It could be your brakes are fine but expectations somewhat different.

Na haven't driven yet brakes don't work well enough for me to drive.. Pedal is perfect when engine not running & only spongy when running.. I read someone had same problem as me & they where told the booster wasn't working so I was just going off what they was told.. I have never driven a disco before so have no idea as to what a good pedal feels like BUT this pedal doesn't feel right at all..way to spongy yet I can get any air out of the lines anymore just nice clean fluid with no bubbles & ive bled them heaps so I know theres no air in them as I have put 3 BOTTLES of fluid threw the system as I like to be certain..

Thanks Jason

[Dougal]

Na haven't driven yet brakes don't work well enough for me to drive.. Pedal is perfect when engine not running & only spongy when running.. I read someone had same problem as me & they where told the booster wasn't working so I was just going off what they was told.. I have never driven a disco before so have no idea as to what a good pedal feels like BUT this pedal doesn't feel right at all..way to spongy yet I can get any air out of the lines anymore just nice clean fluid with no bubbles & ive bled them heaps so I know theres no air in them as I have put 3 BOTTLES of fluid threw the system as I like to be certain..

Thanks Jason

If you haven't driven it, then how do you know they aren't good enough to drive it?

On my rangie a rock hard pedal with the engine off is the sign the bleed was good.

[banjo]

If you haven't driven it, then how do you know they aren't good enough to drive it?

On my rangie a rock hard pedal with the engine off is the sign the bleed was good.

Have moved it around the yard a bit & it doesn't pull up very good.. YES this is my first modern landy but after close to 25 years building breaking & fixing landrovers one would think I would have some idea as to what feels right & what doesn't.. Not being nasty to you at all just saying this isn't my first dance with brakes.. & these don't feel right at all.. YES the pedal is PERFECT after I bled them & the car not running but when I start it the pedal is just way to spongy.. The pedal IMO should still be hard to some degree when the car is running & the brakes have vacumn..

After I have T I will find the other threads I read & post a link of what I have read & why I got the new booster. Someone else had the EXACT same problem as mine & was told the booster is leaking.. ONLY GOING ON WHAT I HAVE READ.. BUT since this is my first modern landy with disc brakes all round I thought I would ask for sugestions..

[banjo]

This thread is the same as what im having

http://www.aulro.com/afvb/discovery-...gy-brakes.html


And this thread tells me I am bleeding them all in the correct way.

http://www.aulro.com/afvb/discovery-...-sequence.html


And this thread tell me about the brake light switch problem i'm having is the same as this persons.

http://www.aulro.com/afvb/discovery-...ht-switch.html

[98discovery]

You make mention that all pads were replaced. I recently replaced all my pads and can say for certain that the pedal will feel very spongey until you take it for a run and let them bed in a little. Mine took probably the first 100km to feel their best but after a short drive improved dramaticallyThis is normal and will vary depending on the condition of the disc surface and how you drive. Interestingly the pads I fitted advised against any bedding in process , rather just to avoid hard breaking for the first 100km.

[Dougal]

You make mention that all pads were replaced. I recently replaced all my pads and can say for certain that the pedal will feel very spongey until you take it for a run and let them bed in a little. Mine took probably the first 100km to feel their best but after a short drive improved dramaticallyThis is normal and will vary depending on the condition of the disc surface and how you drive. Interestingly the pads I fitted advised against any bedding in process , rather just to avoid hard breaking for the first 100km.

Indeed. New pads on worn rotors wil feel a bit mushy until they wear to fit the not-flat rotor surface.

[banjo]

I will take it for a small drive this morning & see how it goes before I change out the booster. Can try it anyway..