I am new here aand feel as if I am on stage :-
Here goes , my car is a 1994 Range Rover Vogue SE (soft dash ).
I rescued this car in 2013 and have had to overcome many problems .
There is one problem that has come back to haunt me.
To prevent further waffle ( and does that V8 WAFFLE -BLISS ), on inspecting the rear brakes L.H.S REAR, I WAS SUPPRISED AS TO LACK OF WEAR TO THE PADS .
I checked caliper operation to piston and found NO MOVEMENT .
I suspected a ssiezed caliper ,but found the pistons would turn freely ( ish ), so I tried to bleed the caliper , nothing ( fluid) at the nipple .
I removed the nippleand the 10mm stud above the nipple ,= NO FLUID IN PIPE .

BUT the car will stop on a tanner ( sixpence ).

I have found a 50mm x20mm device in the brake system just below the wabco block which is clamped to the vertical bodywork adjacent to steering shaft .

Does ANYONE have the slightest resolve .

Does anyone live near Wakefield Yorkshire.
I

Not totally conversant with your system but could well be a brake limitation valve stuck closed,
I take it hasn’t ABS?

Look for a crimped pipe between rear axle and the ABS unit then to that "block" it's a reduction valve.. Try loosening pipes forwards from axle and see if fluid comes out.There must be a blockage somewhere along the way.

PaulJM said:

Look for a crimped pipe between rear axle and the ABS unit then to that "block" it's a reduction valve.. Try loosening pipes forwards from axle and see if fluid comes out.There must be a blockage somewhere along the way.

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Hello PaulJM, I thank you for your information.
I was to trace ALL pipework under the car today.( but her indoors says `IT IS SUNDAY , WHAT WILL NEIGHBOURS THINK `( I suppose you can guess how old we are )
I thought this ( BLOCK ) may have been a none return valve ,but having thought it through this idea was silly .
airsporter22.


9

Been a long time since I had one and the abs is a totally different system to my Disco 1. I think it is the ABS (wabco block) that is stopping that brake line check state oo all pipes between wheel and ABS you may have a bad leak that is causing ABS to block that port or the abs may be faulty.

3 out of 4 ain't bad, over a period of years you'll save quite a bit on pads. Welcome to the forum.

Col

Youve still not finished the sentence -

And no I wa ?

HA HA , I do not brake a lot or even hard . Quite to the consternation oof certain passengers .
Dovisioso would certainly have competition .

I have in fact consideered changing the WABCO system to a more conventional servo .

RangeRoller dt said:

Youve still not finished the sentence -

And no I wa ?

Click to expand...

and no I was not lost .!!

Merely too many things to do ,and seeing as the RR was running perfectly the use of forums was not on my hit list .
in retrospect I SHOULD have kept in contact .

AM I FORGIVEN .!!

airsporter22 said:

and no I was not lost .!!

Merely too many things to do ,and seeing as the RR was running perfectly the use of forums was not on my hit list .
in retrospect I SHOULD have kept in contact .

AM I FORGIVEN .!!

Click to expand...

Seeing it's Sunday of course.I take it it is a Classic? or possibly a very early P38, vogue is only a trim level.if it is a P38 then the ignition has to be on to get fluid out of the back calipers.

Soft dash RRC

I think you need to bleed the brakes...
Then bleed them again...

+1

RRC and ABS oh joy!!
The brakes are relatively good generally but the rear calipers are prone to seizing. Disco 1 has a similar issue.
Don't be fooled by the lack of action and/or fluid. The RRC ABS system has two parts, the hydrostatic system and the combined power and hydrostatic system. To see what is happening, the system has to be pressurised so don't try to check anything unless you have run the pump and the pressure switch has shut the pump off.

The manual states:
The hydraulic system comprises two completely independent circuits. The rear calipers and upper pistons of front calipers form POWER CIRCUIT. The lower pistons in front calipers form COMBINED POWER/HYDROSTATIC CIRCUIT.

Once you are happy you have pressure you can then crack the bleed nipple and GENTLY press the brake pedal, hopefully brake fluid will come out. Your other option here is to pop the pads out, push the pistons in and then insert a small piece of timber on each side of the disc and then push the pedal, hopefully the pistons will move out. If nothing happens, then you'll need to chase it backward.

On top of the back axle there is a connector, it has two flexible pipes come in from the top then the two rigid pipes for the back calipers. Crack the union for the brake pipe where you have no fluid. Once you crack it loose, brake fluid should drip from the now loose union. If it doesn't chase the pipes further forward. There should be a two way connector. Again, cracking the unions should tell you if there is brake fluid in there. After the two way connector, the only remaining union for the rear brake pipes are the ones at the hydraulic booster unit. If you get that far back and no fluid I would try bleeding the system the first - make sure you have lots of brake fluid and follow the workshop manual procedure to the letter.

If you can't get any brake fluid out of the line you may well need need a new hydraulic booster unit. The ABS booster unit/valve block is not serviceable and MUST be replaced in the event of a problem. If you have traction control as well, there is some additional plumbing but the operation of the ABS system is the same. The traction control is an extension of the ABS and operates only on the rear wheels.

Good luck with it.