Question about Cars & Trucks
It's happened 3times in 3years in my transit van brack pedal rock hard I get aa out when they arrive its fine , been in 3garages cannot fine any fault they changed brake fluid did brakes looked at hoses everything, it's a all full feeling
Hi P, The most usual cause of the brake pedal action becoming hard is a defective return seal in the brake master cylinder. When the brakes are depressed fluid is pushed into the wheel cylinders, activating the brake pads and shoes. After a few operations of the braking system the fluid fails to return to the master cylinder and with each further action the brakes become tighter. After the vehicle stands for some time the pressure gradually releases and frees the brakes. Have the brake master cylinder checked. It's good policy to replace the brake fluid once or twice a year as part of the major service. Regards John
Posted on Nov 28, 2013
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Posted on Jan 02, 2017
Is it possible that you are hearing the abs pump running in the engine compartment? It sounds like an ABS problem with one of your wheel speed sensors.
Posted on Mar 01, 2009
Be sure you have changed the break oil completely. Otherwise drain the hydraulic system and renew with correct type of oil. If you have a ABS system you have to check that also.
Posted on Jul 20, 2009
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