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/ubbthreads/images/graemlins/confused.gif. I have completely rebuilt a 1977 Midget from the ground up. I have come to a hydraulic problem that I can not figure out. I know my way around cars as I have rebuilt many; however this is my first non-American rebuild. Now my problem, the brakes have been completely rebuilt. I rebuilt the master cylinder, the calipers, all rubber flex lines, and pressure fault switch. When I took it out for the first test drive the front disc locked up. I have replaced or rebuilt every component in the brake system and properly bleed the brakes hundreds of times. I have seemed to look at every part and rebuilt several items twice. I can't seem to put a finger on the problem. Anyone out there have a tip?
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Brake problem Midget
- Thread starter hoppy1955
- Start date
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Keoke
Great Pumpkin
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Hi Hoppy, Seems strange.But try this. with that brake locked up open it's bleed screw and see if it releases. If it does I would suspect some foreign matter inside that caliper blocking the fluid return to the reservoir,or the new hose to that caliper may be defective.--- Fwiw---Keoke
These brake lines have a tendency to collapse internally and not allow the caliper to release.
Did just one caliper lock up or both?
If one locked, I would look into replacing the hose again.
Also, what brake fluid are you using? You should be using DOT 4, preferable Castrol LMA. DOT 3 fluids can affect the rubber in the system.
Did just one caliper lock up or both?
If one locked, I would look into replacing the hose again.
Also, what brake fluid are you using? You should be using DOT 4, preferable Castrol LMA. DOT 3 fluids can affect the rubber in the system.
Mike,
thanks for the reply, both lockup which is what puzzled me.......I replaced the rubber hozes twice thinking as you did.......I use 5 dot silcone fluid which is suppose to be safe on th rubber parts. I thought it be the pressure switch but even with it disabled it both still locked up.
thanks for the reply, both lockup which is what puzzled me.......I replaced the rubber hozes twice thinking as you did.......I use 5 dot silcone fluid which is suppose to be safe on th rubber parts. I thought it be the pressure switch but even with it disabled it both still locked up.
