Your load sensing valve is bolted to your car body near the rear axle the brake pipes go into it. The linkage is between the valve and the axle. As you put more weight into your car the body gets lower pushing against the valve to increase brake pressure. I assume yours has sized and probably failed the mot. They normally size on the valve pivot pin.
Raz
April 2010
howtomendit.com for free repair help, information and advice.
