zim Posted February 23, 2010 Share Posted February 23, 2010 Evening, We recently got a range rover which has the hydraulic pump + accumulator setup. It had abs. BUT .... the axles which used to have ABS have been swapped for normal axles without. When the engine is running, it is very easy to lock the brakes. The back brakes lock up, the front aren't too bad. Would this rangey not have a bias valve for the rear ? and because it has no abs (speed sensors) it's causing issues ? Regards Gordon Quote Link to comment Share on other sites More sharing options...
sheltie50 Posted February 25, 2010 Share Posted February 25, 2010 Did this on a disco some time ago and from memory--- It needs to be replumbed from the master cylinder and to pass a mot all traces of abs must be removed inc the warning light. It needs a splitter on the rear and the pipes across the rear axle are different, there is a different threaded conection which needs to replaced, you need to plumb it so as to remove the return pipe but all this is a little while ago and I might be forgetting something, can you have a look at the configeration on an older model without abs. Quote Link to comment Share on other sites More sharing options...
zim Posted February 25, 2010 Author Share Posted February 25, 2010 this is a setup with an hydraulic brake pump and not a servo with master cylinder. which could be swapped for, but it's a ball ache of a job to do Quote Link to comment Share on other sites More sharing options...
sheltie50 Posted March 12, 2010 Share Posted March 12, 2010 Late reply ! The one I did was originally master and servo, I really dont know but reckon you will have to change your one to the earlier configuration. dont think it should pass the mot as it is. Quote Link to comment Share on other sites More sharing options...
task Posted March 18, 2010 Share Posted March 18, 2010 nope, you'll need a non-abs master cylinder to pass an MOT. Sounds like you currently have the ABS pump/accumulator and possibly the valve block still fitted. Strip the above off and fit a master cylinder from a non-abs vehicle. Quote Link to comment Share on other sites More sharing options...
bishbosh Posted March 18, 2010 Share Posted March 18, 2010 There is no bias valve with ABS as it is four channel I believe. Mixing and matching ABS and non abs on the same 2 tonne truck is a recipe for disaster IMHO. Quote Link to comment Share on other sites More sharing options...
sheltie50 Posted March 18, 2010 Share Posted March 18, 2010 As per previous post-- all trace of ABS must be removed right down to the light which tells you the ABS is not working. Quote Link to comment Share on other sites More sharing options...
ThreeSheds Posted March 19, 2010 Share Posted March 19, 2010 As per previous post-- all trace of ABS must be removed right down to the light which tells you the ABS is not working. Perhaps it would be easier to re-instate the ABS axles? Quote Link to comment Share on other sites More sharing options...
sheltie50 Posted March 19, 2010 Share Posted March 19, 2010 Perhaps it would be easier to re-instate the ABS axles? In this case it might well be, quite a bit of work to sort it out either way. Changing to a servo system and replumbing the rear axle Oh! and fitting a brake bias valve should work so long as the mot tester is happy, what about insurance as it's substatially altered from standard. Quote Link to comment Share on other sites More sharing options...
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