Jamiedgwilson Posted February 24, 2018 Share Posted February 24, 2018 My Ep70 failed the mot recently with a brake imbalance between left and right rear drums. The handbrake was perfect (1% variance) but the service brake was way out. Changed wheel cylinders but problem still there. So I got a pressure test done and there is less pressure going to the problem wheel. Suspecting it’s the brake bias/proportioning valve. Struggling to to find a replacement - if anyone knows where I can get one please shout up! Or anyone know what the model number of it is and if any other cars use the same part? The alternative was to fit an aftermarket adjustable part. Anyone know what the standard bias ratio is? Or able to advise of what part to fit? I’m guessing I could just remove the standard valve, connect through the front brakes so their direct to the master cylinder. Then add th new valve between the master cylinder and the rear lines? Thanks Quote Link to post Share on other sites
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