leaky proportioning valve
few weeks ago, i start noticing strange noise coming from my brakes... after thorough checking, i notice my brake fluid level decreased quite alot... at that time i thought there was a leak at the brake hose as previosly i diy service my brake calipers, i might not had tightened up the screws properly...
after few days of monitoring, there is no sign of leak at the brake hose... during my last brake fluid topup, i notice the bottom part of my brake pump is kinda wet... so, confirmed the brake fluid leaked out from the brake pump... and its not jz normal drips... whenever i pump on the brake pedal, it SQUIRTS out fluid like nobody business....
the next day immediately i took my car to the workshop and had it fixed...
to my surprise, it wasnt the brake pump seal that leaks... it was the brake proportioning valve which distributes brake force accordingly for the front and rear brakes failed... somehow the metal thing got punctured and leaking...
removing it was kinda easy... fixing it back was a tough job... it took nearly 2 hours and 3 mechanics to fix all 6 metal pipes back on... what made it tough is that those metal pipes arent flexible... all 6 pipes must be alligned properly at the holes then only can be secured in place.... add to the matter of fact, the brake pump is located at a vr discrete place behind the battery.... so, it was kinda hard to reach...
brakes were bleeded all 4 sides... 2 bottles of DOT4 brake fluid... brakes were tested... everything satisfied... with a broken wallet....
:(
after few days of monitoring, there is no sign of leak at the brake hose... during my last brake fluid topup, i notice the bottom part of my brake pump is kinda wet... so, confirmed the brake fluid leaked out from the brake pump... and its not jz normal drips... whenever i pump on the brake pedal, it SQUIRTS out fluid like nobody business....
the next day immediately i took my car to the workshop and had it fixed...
to my surprise, it wasnt the brake pump seal that leaks... it was the brake proportioning valve which distributes brake force accordingly for the front and rear brakes failed... somehow the metal thing got punctured and leaking...
removing it was kinda easy... fixing it back was a tough job... it took nearly 2 hours and 3 mechanics to fix all 6 metal pipes back on... what made it tough is that those metal pipes arent flexible... all 6 pipes must be alligned properly at the holes then only can be secured in place.... add to the matter of fact, the brake pump is located at a vr discrete place behind the battery.... so, it was kinda hard to reach...
brakes were bleeded all 4 sides... 2 bottles of DOT4 brake fluid... brakes were tested... everything satisfied... with a broken wallet....
:(
2 Comments:
ouch..hefty bill..sure its not related to ur disc brake project?
not sure though... but after so many years using double layer brake servo with immense pressure, i wouldnt doubt the thing fails...
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