this is on my sons 91 xj with a front 60 and a 14 bolt rear.front and back are 3/4 ton chevy disc brakes.we installed this over 8 years ago and have not had a problem with it ever.this rig is mainly driven on the street.when we installed these axles we swapped to the corvette equal reservoir mc also.
the other day on the way to work he completely lost his brakes.this happened suddenly without warning (he says)
fortunately he was going slow and was able to get to a parking lot and leave it sit.
we went back and worked on it that night and noticed one side of the reservoir was low but not empty.
we filled it and tried to bleed it but every bleeder broke off so I had to try to bleed it by breaking the banjo bolts.this seemed to work and we got a lot of fluid through it but still no pedal at all.
next we went out and bought a rebuilt mc the same as the corvette one we had.
it has to be modded a bit to fit but we did it and bench bled it and got it mounted on.
still nothing right to the floor.in drive there was no brake at all.
next we got it towed home and bought all new calipers and pads.now we were able to bleed it properly with the bleeders at the top.
we got fluid to bleed through them and im confident there is no or very little air at all in the system but they will not hold at all and the pedal still goes to the floor.
its on jackstands now and the wheels are off.with the brake to the floor the rears are not clamping enough to even stop it from spinning.
if we lock it in 4wd the fronts will stop everything from spinning but if I put a bar between the studs I can easily overcome the clamping force.
one thing I did notice uis that the rear rotors were rusted on the faces.i don't thik they hsave been clamping for a while ,even before this major problem.
any ideas as to what the heck is going on here?
the stock "distribution metering" block is still in place.
and we have not added a proportioning at all in the stock system.
the other day on the way to work he completely lost his brakes.this happened suddenly without warning (he says)
fortunately he was going slow and was able to get to a parking lot and leave it sit.
we went back and worked on it that night and noticed one side of the reservoir was low but not empty.
we filled it and tried to bleed it but every bleeder broke off so I had to try to bleed it by breaking the banjo bolts.this seemed to work and we got a lot of fluid through it but still no pedal at all.
next we went out and bought a rebuilt mc the same as the corvette one we had.
it has to be modded a bit to fit but we did it and bench bled it and got it mounted on.
still nothing right to the floor.in drive there was no brake at all.
next we got it towed home and bought all new calipers and pads.now we were able to bleed it properly with the bleeders at the top.
we got fluid to bleed through them and im confident there is no or very little air at all in the system but they will not hold at all and the pedal still goes to the floor.
its on jackstands now and the wheels are off.with the brake to the floor the rears are not clamping enough to even stop it from spinning.
if we lock it in 4wd the fronts will stop everything from spinning but if I put a bar between the studs I can easily overcome the clamping force.
one thing I did notice uis that the rear rotors were rusted on the faces.i don't thik they hsave been clamping for a while ,even before this major problem.
any ideas as to what the heck is going on here?
the stock "distribution metering" block is still in place.
and we have not added a proportioning at all in the stock system.