T100 Brake Weirdness

[Mooreaud]

I own a 1993 T100 4x4 which is experiencing a very strange problem. After the engine warms up the brakes start locking up. It appears that both the front and rear breaks are doing it since they all are hot to the touch. The brake pedal has hardly no play and is at the top. I have checked the brake fluid and it is not warm. The emergency brake is not draging. Once the engine cools down the brakes work fine.

Now to add to this, a small amount power steering fluid was also accidently added to the brake system. The brakes were bleed completely. And now have regular brake fluid in them.

This truck is rarely driven.

Any clues?

[ksyankee]

Maybe check the brake pedal freeplay. Seems there should be some. The other thing you might look at is the power brake booster, maybe there is an issue there with engine compartment heat. Just some suggestions, good luck!

[Mooreaud]

Thanks for the reply. I replaced the master cylinder and it fixed the problem. My guess is the power steering fluid effected the seals in the master cylinder.