IH8MUDTOO
Registered User
My brake pedal is showing symptoms of a leaking brake system (soft pedal).
Concerned that perhaps a wheel cylinder or front disk caliper had failed, I pulled the tires/wheels and see nothing but clean dry components.
I popped the hood and see that my brake MC is weeping from the bottom, and the reservoir is low on fluid (25% filled).
Given no appearance of brake fluid at the calipers/wheel cylinders, I suspect the brake MC is failing internally.
Strangely, when pumped 2-3 times, the brake pedal holds steady--no gradual loss of pressure.
Can someone please inform me of how to determine which brake master cylinder I have on my truck? The replacement auto parts sites show several--JD5, JD7, JB5, JB7.
thanks!
Concerned that perhaps a wheel cylinder or front disk caliper had failed, I pulled the tires/wheels and see nothing but clean dry components.
I popped the hood and see that my brake MC is weeping from the bottom, and the reservoir is low on fluid (25% filled).
Given no appearance of brake fluid at the calipers/wheel cylinders, I suspect the brake MC is failing internally.
Strangely, when pumped 2-3 times, the brake pedal holds steady--no gradual loss of pressure.
Can someone please inform me of how to determine which brake master cylinder I have on my truck? The replacement auto parts sites show several--JD5, JD7, JB5, JB7.
thanks!
