Quote:
Originally Posted by squishware
I was driving on the Interstate and I heard a pop then the car could barely make 60 mph at 3k rpm. I got off at the next exit and parked. Both back wheels were hot as the dickens. I had it flat towed home. I was able to drive it up on the tow bed after it had cooled. I am entirely unfamiliar with brake repair (other than bicycles). I jacked it up and tried loosening the hose to see if that released it(it did not).
I can not tell for sure if the caliper is locked or the emergency brake. Short of taking off the caliper is there a way to test? Thanks for all replies.
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If the hoses are damaged inside = acting as a one way valve = brake friction heat builds until:
* The brake fluid flashes to vapor/steam generating a massive 1/10 second over pressure forcing back past the restriction = blowing back through the master cylinder = the small fluid return port can make an audible pop.
* The brake fluid flashes to vapor/steam generating a massive 1/10 second over pressure Hyper Extending/jamming the corroded piston/housing = hose or caliper seal pop/burst = pressure relief leaving the corroded piston/housing Hyper Extended/Locked on the rotor.
* Brakes, bearing grease and/or tire catch fire.
Brake:
http://www.peachparts.com/shopforum/showthread.php?t=142411
Some Facts About Brake Hoses:
#1. The the industry standard average safety life of a brake hose is six years. FYI data SAE: J1401, J1703, J1705, J1873, J1406, J1288, J1403, J1833, J1402.
#2. Brake hoses deteriorate from the inside as well as the outside.
#3. Moisture is absorbed into brake fluid systems through brake hoses.
#4. Contaminants in brake fluid act abrasively on the inner wall of brake hoses.
#5. The brake hose reinforcing fabric deteriorates through expansion and moisture.
#6. High operating temperatures contribute to the deterioration of hoses.
#7. Brake hoses swell with age and restrict flow.
#8. Generally all brake hoses on a vehicle deteriorate at the same rate, So all hoses should be replaced if one is found to be faulty!
Brake hose failure mode:
#A. Rupture (burst hose) = age, exercise (too many miles) or impact are the typical cause.
*B. Partial internal collapse = the inner ply becomes damaged/detached acting as a partial restriction and/or one way valve.
#C. Full internal Blockage = the inner ply becomes damaged/detached acting as a plug = brake pedal still feels good but there is no brake application.
Brake:
http://www.peachparts.com/shopforum/showthread.php?t=142411
New brake hoses on a used car are cheap life insurance.
Brakes caught fire 1999 C280 (with pictures of damage)
http://www.peachparts.com/shopforum/showthread.php?t=208962
Tell my dad my tire is on fire!
http://www.peachparts.com/shopforum/showthread.php?t=105730
Industry Adopts Brake Fluid Replacement Guidelines By Bill Williams, Technical Contributor
http://www.babcox.com/editorial/bf/bf50412.htm
Brake flush every two years?! U'r kidding right?
http://www.peachparts.com/shopforum/showthread.php?t=96852&page=1&pp=15
Why should I flush my brake fluid every year, you ask?
http://www.peachparts.com/shopforum/showthread.php?p=220599
Have a great day.