Bias Valve/Proportioning valve Leak!!!
 

I have a steady leak from my Bias valve. Its coming from the rear(closest to firewall). what is under the cap that is put on from the factory? Is it just a plug or something i can pull out and reseal better?

thanks

Is this the part you are talking about? If so just replace it.
Brake Pressure Reducing Valve - ABS On Land Rover Discovery

yes, replace it

x3 on replacing it. it's easy to do. i didn't even need to bleed the brakes after.

i picked up a used one from some guy parting out his D1. much cheaper than a new one.

i understand i need to replace it.....they are not cheap by any means. There are no D1's at the boneyard at the moment either so a used one is not an option. I was just wondering if that plug on the back can be pulled and a new o-ring installed or something along those lines. I need my truck and I hate to say it but i just dont have 300 bucks at the moment.

do a quick search for Paul Grant and/or Will Tillery.

both guys sell used LR parts. they should be able to hook you up.

Math Skills
 

How did $215 turn into $300?
......

Get an adjustable proportioning valve from Summit and replumb the lines.

Rovahfarm has em for $179......

fishEH thats what im in the process of doing. I found one for 75 bucks and comes with an adjustable valve so i can get the brakes dialed in right. thanks for the help guys