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-   -   Total brake failure (http://www.peachparts.com/shopforum/diesel-discussion/425231-total-brake-failure.html)

Sugar Bear 07-28-2025 12:47 PM

Good work. I agree with the theory that the MC was extended too far, seen it whilst bleeding brakes on other makes. I'm guessing that the piston travels beyond its normal range and the seals get damaged on gunk in the normally unused portion of the MC bore.

Skid Row Joe 08-08-2025 11:45 PM

Yah.......unless the OP flushes and bleeds the brake system, he won't know what's what.

The replacement of brake calipers may be necessary. Without a flush n bleed, you won't know where you stand.

jbach36 08-17-2025 12:42 AM

I see you got our message from Little Vinnie, capisce?
 
Little Vinnie says pay up.

Just kidding!

jbach36 08-17-2025 12:43 AM

Glad to hear it!
 
Quote:

Originally Posted by psaboic (Post 4366903)
Ok, as promised here is what caused the issue. It was actually a combination problem. The one caliper was definitely bad, but also the piston in the baster cylinder did not retract and was stuck. Near as I can figure, when the one caliper let go and brake pressure dropped, pushing the brake pedal and having it go to the floor overextended the piston in the master cylinder causing it to get stuck. No matter how many times I pushed the pedal, no brake pressure was being generated. Anyway, a new master, a new caliper and hose, full system bleed and I'm back in business.

Wow, that was a scary episode!

Skid Row Joe 08-18-2025 04:49 PM

I'd do a complete caliper R&R with new calipers, while you're in there.

A little late getting to this thread, so, you're probably back on the road now.






Quote:

Originally Posted by psaboic (Post 4365323)
Ok I only got a chance to take an initial look at it once it got towed home. I pulled all 4 wheels and everything looked ok, except the entire inside of the right front wheel and tire were covered with brake fluid. The caliper, disc, and pads are soaked in brake fluid, and the fluid in the rear part of the brake fluid reservoir is about a 1/2 inch below the "min" mark.

My first guess is blown seals in the caliper as the rubber hose, and steel line are dry and intact, but the caliper is covered in brake fluid.

I'm just wondering why that would cause complete brake failure?

Comments or ideas???

Next thing is I'm going to open the bleeder screws and test each caliper to see if it is getting pressure when the pedal is pressed.


Skid Row Joe 08-18-2025 04:52 PM

In complete AGREEANCE!



Quote:

Originally Posted by Diesel911 (Post 4365556)
While replacing the hoses is a bit more work they are cheap and even the chain autoparts stores like autozone have brake hoses. All brake hoses no matter where they are from have to me DOT specs. Meaning I have never had any issue on any car with made in China brake hoses.



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