Redundancy, warnings, and inspections. You should have two different brake systems, traditionally the “parking brake” is a cable. Your hydraulic brakes are two different systems, one for the front, one for the back - if one fails you should have the others (at least a few times until you lose all fluid - enough to stop once). Your brakes also are designed to make noise when the common wear parts get worn, and that is a good time for a tech to inspect the rest of the system.
When did seperate hydraulics start being common? Most of the vehicles ive worked on have one hydraulic system with a proportioning valve to control pressure, usually with more braking power going to the front.
I wouldn’t really consider that 2 seperate systems. If your front brakes leak you’re still gonna end up losing pressure to the rear. Its pretty much just enough to pull over if you clue in to whats happening
Redundancy, warnings, and inspections. You should have two different brake systems, traditionally the “parking brake” is a cable. Your hydraulic brakes are two different systems, one for the front, one for the back - if one fails you should have the others (at least a few times until you lose all fluid - enough to stop once). Your brakes also are designed to make noise when the common wear parts get worn, and that is a good time for a tech to inspect the rest of the system.
When did seperate hydraulics start being common? Most of the vehicles ive worked on have one hydraulic system with a proportioning valve to control pressure, usually with more braking power going to the front.
1970s/early 80s. The master cylinder has two chambers, though they are connected.
I wouldn’t really consider that 2 seperate systems. If your front brakes leak you’re still gonna end up losing pressure to the rear. Its pretty much just enough to pull over if you clue in to whats happening
that is what I was trying to say, but perhaps I didn’t write well.