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Rear Brakes Locking Before Fronts


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Posted

Getting a bit braver with the car now.

In the dry, braking hard in a straight line the back wheels lock. (It's not an engine braking issue)

Testing this further the back of the car came round a little, quite dangerous!

So WSCC... What are the steps diagnosing and fixing the problem?

Posted
Step 1. A few tech details might be useful - what are the front/rear brakes tyre sizes etc..
Posted
Assume you have the master cylinder port marked P going to the front and the one marked S going to the back?
Posted

OK, just searched through all the receipts and can't find the type of brakes that are fitted. There are receipts from Ford dealers for pads and discs so I assume sierra items...

Tyres are 205 45 R15 all round.

Master cylinder hasn't been messed about with and the car was run in the speed series, and tracked alot by previous owners - I assume there is no fundamental setup problem, and this is more wear and tear.

The clutch slave cylinder let go recently. It had a corroded bore and needed replacing - could there be a similar age-related fault on the brake master cylinder?

Posted

most westfields are a bit heavy on the rear brakes

either use better compound pads on the front or fit a adjustable bia valve in the rear circuit

Posted
Greenstuff pads on the front/standard crappy ones on the back cured it for me.  Cue the 'Greenstuff isn't as good as' discussion, but mine have always worked fine.
Posted
Thanks chaps, I'll give a brake fluid change, and change the front pads to something more aggressive and see how it goes.
Posted
Try Mintex 1144 on front
  • 2 weeks later...
Posted
Try all the above fix's first. if all else fails ,chamfer your rear pad a bit to reduce the surface contact area . Do it a  bit at a time until the fronts lock up first. Primative but effective.
Posted
If your car is "diving" under heavy braking the weight is shifting to the front and the rear wheels will have considerable less weight to brake...  in this case adjusting shocks, ride height or springs might help.

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