Brake problems - ABS blocking circuit?

[s4martin]

I've been doing some serious overhaul on the brakes of my E34. The initial symptoms were the car pulling to one side and when I checked one of the front wheels, this was getting hot.

So most of the brake components were fairly worn, (165k on the clock) and I've now replaced front calliper, pads and discs and flexi hoses all round. Just replaced the master cylinder, as the old one didn't seem to be building pressure on the circuit the hot wheel was on.

Now the fluid won't get pushed to the rear wheel opposite the hot one. I've checked further and fluid is being pushed into the ABS unit from the master cylinder, but nothing is getting out of the ABS unit. Seems the blockage is here.

Any ideas what this is? Stuck valve? Blockage? Any chance of repairing this, or is it time to start looking for a replacement ABS unit?

Thanks and Regards,

Martin.

[winfred]

time to replace the pump