VW Golf MKII Brake Proportioning Valve fix OR rebuild OR replace OR o-ring OR repair OR diagram OR half-cut OR.......
Thursday, May 13, 2010
Did you type the title of this post into Google only to find no instructions for rebuilding your leaking VW brake proportioning valve? I did! Well, rest assured, you don't have to spend $140+ for a new one. You can just clean it out and put new o-rings in it. Mine was leaking in the middle, where there is an o-ring band around it. I assumed that this is where the whole thing screwed apart, but I found that the o-ring actually just covered a tiny tiny hole. It screws apart from the top and you just yank that brass plunger piece out with some needle-nose pliers. The top of the brass plunger has what looks like a screw driver slot, but trust me, turning it with a screw driver does nothing. Pull it out, clean it up, get new o-rings, put it back together, fixed. My o-rings looked fine at first glance, but after further investigation I saw tiny striations that were letting the brake fluid by.
Labels: brake proportioning valve, vw golf
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