pug 405 estate brakes

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Thu 15 Jul 2004 13:33
pug 405 estate brakes - allan doc
I've got a pug 405 estate j reg. I order to stop the car i have to press the brake pedal right down to the bottom in order to stop the car. I've been informed thats its either the master cylinder or the brake servo. Could anyone give me any ideas in how to determine which of these thing is could be. There is fluid in the master cylinder and i've checked the servo valve for correct operation and both are fine. i don't want to buy a master cylinder, and find out its the servo, so would really like some help in how to test these parts. Many thanks.
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Thu 15 Jul 2004 13:39
pug 405 estate brakes - Dynamic Dave
I've been informed thats its either the master cylinder or
the brake servo.


Or it could be that the brakes just need bleeding. When was the last time the fluid was changed - if ever?

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Thu 15 Jul 2004 16:49
pug 405 estate brakes - RichardW
More likely the self adjuster in the rear drums have seized up. Try pulling on the handbrake, and the pump the brake pedal slowly a couple of times - how does it feel now? If it hardens up and holds pressure, the rear shoes are out of adjustment and taking a lot of fluid to pump them up. Strip and clean the rear brakes if this is the case.

Master cylinder failure usually results in the pedal being reasonably firm but sinking under constant pressure. Servo failure results in the brake pedal feeling very heavy as there is no assistance.


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RichardW

Is it illogical? It must be Citroen....
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