Break Fluid Leak - Advise needed

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Dobby84

Dobby84

New Member
Posts
4
Hello everyone. New to Land Rove and the RR P38.

Been driving it a few days until the brake fluid warning came up on the dash. On closer inspection the fluid squirts out of the pipe that runs over the rear diff. There are 2 pipes and its the larger (top) shown in the pic that is leaking. It has split near the top right bend.

suby3u4a.jpg


Ive been searching the internet for part numbers and replacements but can seem to find this pipe.

Any help would be great guys. Cheers
 
That looks different to my P38 as the brake pipes on mine run over the rear axle on the chassis and usually rust through in the middle.
 
Can I confirm that the larger pipe is actually the ABS sensor (electrical) and the lower, thinner pipe is the brake line?

My P38 is N-reg(95)
Looking on RAVE it seems that cars up to 99MY have electrical sensors and cars from 99MY have what is called a combined hydrostatic/power circuit which I am unfamiliar with.
 
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Dobby84 said:
Can I confirm that the larger pipe is actually the ABS sensor (electrical) and the lower, thinner pipe is the brake line?

My P38 is N-reg(95)
Looking on RAVE it seems that cars up to 99MY have electrical sensors and cars from 99MY have what is called a combined hydrostatic/power circuit which I am unfamiliar with.
Click to expand...
Electrical cables are flexible, metal brake pipes are not.
No idea what you are on about with thet last comment, ABS uses electrical sensors.
 
Just what I rear from RAVE (page 796) circuit diagram. Not sure what it is either.

My mistake, I was reading the wrong numbers.
 
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Obviously it has to be said in today's 'elf and safety world - don't drive the car again until you have replaced the brake pipes! :D
 
StuckAgainSteve said:
Obviously it has to be said in today's 'elf and safety world - don't drive the car again until you have replaced the brake pipes! :D
Click to expand...

+1. Clamp the flexi pipes by first moving the spring pipe protector, whip the brake pipes off. If you haven't got the flaring tool to make the pipes then a local garage will make them for you. Refit and bleed the system, simples. :D
 
Dobby, the P38 braking system is divided into 2 circuits, one to the front the second to the back.
When you push the brake pedal you are pushing fluid to the front calipers thats the hydrostatic part, but pushing the pedal only opens a valve to the rears, fluid is pushed under pressure from the pump, thats the power part.
Its all controlled by that grey box thing under the fluid reservoir and if it goes wrong costs a fortune to sort!
If you read up on bleeding the brakes you'll see that to bleed the fronts you push the pedal up and down while opening the bleed nipples, on the back calipers you push the pedal half way and hold it there, you then open the bleed nipple turn ignition on for 10 seconds that runs the pump forcing fliud through, do that till theres no bubbles.
 
Nickpen said:
Dobby, the P38 braking system is divided into 2 circuits, one to the front the second to the back.
When you push the brake pedal you are pushing fluid to the front calipers thats the hydrostatic part, but pushing the pedal only opens a valve to the rears, fluid is pushed under pressure from the pump, thats the power part.
Its all controlled by that grey box thing under the fluid reservoir and if it goes wrong costs a fortune to sort!
If you read up on bleeding the brakes you'll see that to bleed the fronts you push the pedal up and down while opening the bleed nipples, on the back calipers you push the pedal half way and hold it there, you then open the bleed nipple turn ignition on for 10 seconds that runs the pump forcing fliud through, do that till theres no bubbles.
Click to expand...
Bull****, the pump powers all braking.:)
 
I was trying to keep my post short and simple, obviously there's "power" to all the brakes, 2.1 tonnes needs some sort of servo assistance to stop, I was trying to simply describe why its called hydrostatic and power to Dobby
 
Nickpen said:
I was trying to keep my post short and simple, obviously there's "power" to all the brakes, 2.1 tonnes needs some sort of servo assistance to stop, I was trying to simply describe why its called hydrostatic and power to Dobby
Click to expand...

What servo assistance? You've said some of the brake force is provided by the pedal pressure, provided by the pump and now it's servo assisted too? Make your mind up.

I thought it was a power braking system - end of.
 
The hydrostatic (basic braking from pedal pressure alone) circuit only services the front brakes, it does not act on the rear ones. This is in case of pressure supply failure. The rear brakes only work when there is accumulated pressure in the system.
 
wammers said:
The hydrostatic (basic braking from pedal pressure alone) circuit only services the front brakes, it does not act on the rear ones. This is in case of pressure supply failure. The rear brakes only work when there is accumulated pressure in the system.
Click to expand...

:confused: Why do people suffer total brake failure when the pump goes tits up?
 
StuckAgainSteve said:
:confused: Why do people suffer total brake failure when the pump goes tits up?
Click to expand...

Maybe they have weak leg muscles. They don't, they just perceive that. There is no rear wheel braking. Minimal front wheel braking. The braking is still there but nowhere near as it would be with pressure assistance. That is what the hydrostatic system is for as a fail safe. There is also an handbrake don't forget. If you are the last of the late brakers some poo may come out that's for sure. :D
 
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