Discussion in 'Early CJ5 and CJ6 Tech' started by mickeykelley, Nov 2, 2021.
I won't knock the extra safety factor of a dual master cylinder, but in reality has anyone ever been aware that one half of their braking system failed?
Also, I've actually suffered complete brake failures twice, on single master cylinder vehicles.
We find this all the time at work also.
Yes, and me too on the singles. But nothing bad ever happened. Pump like hell and pray...
Used to be relatively commonplace. But less traffic back then.
I bought a wrecked '69 Series 2 Land Rover about 15 years ago that was wrecked pretty hard in the front. It was from a total brake failure of the single master cylinder. The previous owner ended up dying of his injuries about 3 weeks after the crash. It happens!
I realize that a single reservoir M/C failure can have hazardous results. I'm just wondering who has had half of a dual system fail and when it happened did they instantly realize it happened.
I’ve had it happen a few times. You definitely notice it. It’s one of those instances when two minus one does NOT equal one.
I vowed to build my brakes differently on my last build because of this. If it’s going to be scary if one fails, I at least want it predictable.
I'ld bet the caliper had semi metallic pads if packaged together.
If that doesn't help than you aren't out a whole lot of time or expense.
Fwiw I have gm calipers on all 4 corners with organic pads and the original 7/8 bore single master cylinder. my wife seems comfortable with it. I am switching to a stepped bore master for redundancy and some initial proportioning.
I assume would need to turn the rotors so the new organic can seat?
Also I found this on a brake site and found it interesting.
Organic brake pads are usually the least expensive choice when it is time for a brake job. They are relatively “soft”, quiet, and gentle on your brake system, and they are a good choice for daily driving. But they wear out quicker than other types of pads and produce significant amounts of dirty brake dust. And because they are softer, they require a bit more effort against the brake pedal. They also do not tolerate overheating very well and are therefore not a good choice for performance use. For all around use, they are just fine.
• Soft pedal
• Gentle on brake system components
• Require more effort when braking
• Wear quickly and require more frequent replacement
• Not suited for performance or heavy-duty use
Just had this happen to my pickup. Front right line blew, didn't notice it under normal braking until I had to do a panic stop and the pedal went to the floor.
This happened to me with my J10 maybe a decade ago. The line between the rear wheels rusted through. Fortunately it happened in the Home Depot parking lot. The pedal travel increases a lot, but the brakes still "work."
What site? I suspect they are wrong or there's some other qualification that makes it true in some specific situation. Possible it requires more effort when the brakes are hot and you make repeated panic stops? At that point, there could be fade with the organic pads that you would not see with harder pads, and you need more strength to overcome the fade. Clearly not the case around town - too many here have used these pads and noted the easier braking.
Brakes were fine in my '85 F250 until I went to leave work one night....pedal went straight to the floor. Didn't need to do anything other than replace the M/C.
Columbia Auto Care and Car Wash | Mobil 1 Lube Express
My immediate reaction is that these people are probably *NOT* to be considered authoritative experts on the subject.
Car washing perhaps, but probably not.
There's a number of people here with real-world experience in this subject, I'd be inclined to listen to them.
I know a couple.
Once when they were in traffic court their buddies were out in the parking lot, greasing the front discs on the police cruiser...
Not even gonna touch that one…….
Those fine Fellows just happened to notice that that cruiser’s discs were a bit dry…
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