Can anyone shed any light on this please. I have bought a Range rover classic which I am trying to get the brakes working. I have fitted a new set of seals in the master cylinder and bled the brake as per several advice note on this page including gravity, but when I push the peddle down it feels to go hard half way down but then releases and goes down to the floor. What am I missing please?
Classic Brake problem
- Thread starter IanRC
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ukadamwest
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what year classic ?
Thanks for getting back to me. It is a 1988 without ABS.
Flossie
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Unless fluid is leaking from the wheel caliper seals you need a new master IMHO.
Okay thanks. The calliper seals look okay in fact the callipers them selves look quite new. The master cylinder seals kit was a Lucas one so I hoped it would be okay.
I see what you are saying though. I should be able check the MS by blanking of the ports with bleed screws which was my next idea.
blackvoguebeauty
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Could also be something to do with the valve thing that goes to the rear brakes? The thing mounted on the drivers inner wing, pipe goes from it to the rear brakes. Someone will be along who can actually tell you the name.... Pressure reducing valve maybe?
Done my brakes recently ('89 RRC, non ABS). I ended up buying a new servo and master cylinder. The whole bleeding process was (and should be) really easy if everything is working properly. Good luck with it.
*edit* Brake Limiting Valve I think... Could have some sort of blockage.
Done my brakes recently ('89 RRC, non ABS). I ended up buying a new servo and master cylinder. The whole bleeding process was (and should be) really easy if everything is working properly. Good luck with it.
*edit* Brake Limiting Valve I think... Could have some sort of blockage.
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ukadamwest
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pressure reducing valve
blackvoguebeauty
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Thanks ukadamwest, I knew someone would be along who knew what they were talking about!
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The pressure reduction valve only reduces pressure to rear brakes, it certainly should not cause the pedal to go to the floor. I would check your replacement master cylinder seal install.
blackvoguebeauty
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I just thought as an option worth checking it could have a bit of crud in it? Being a reducing valve I assume if there is any crud in the system it would particularly trap at that pinch point? It's just the way the OP said the pedal goes hard half way down then releases? Worth checking anyway in case? Happy to be corrected...
As a new owner in to Land/Range Rovers and a new member to this thread I am very impressed by the help on hand. Thank you.
It is looking master cylinder related so I will strip it down again and double check everything, and failing that a new unit. The servo is rusty at the bottom and to whole lot is 27 years old so I might just hast to put my hand in my pocket again. It would be good to have piece mind it will stop if ineed it to.
It is looking master cylinder related so I will strip it down again and double check everything, and failing that a new unit. The servo is rusty at the bottom and to whole lot is 27 years old so I might just hast to put my hand in my pocket again. It would be good to have piece mind it will stop if ineed it to.
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