Only way I could get brakes on the 85 107 was pressure bleeding from
each wheel cyl. The ABS kept it from bleeding top down, but I could
bleed the SDL with the same ABS by gravity. I figgered something was
stuck in the ABS unit?
Kaleb C. Striplin via Mercedes wrote on 5/24/19 1:15 PM:
Ok, I a bled the crap out of it. I did the bleeder at the abs unit,
then did all the wheels again started and RR, the LR, RF, LF. I ran
about 3qts of fluid thru it. At all wheels I have clean fluid and no
bubbles coming out. Took it out and it still has very little braking.
Pedal goes probably 3/4 of the way to the floor till any sort of
braking action happens. It will stop, but not very fast and would not
stop pulling a trailer. Even if the back brakes were not fully
adjusted out yet it would be better than this. When I pump the pedal
it does return but its not an instant return as soon as you left off
the pedal. Also, when just holding steady pressure at about the half
pedal travel or oven 3/4 travel pedal does not sink it seems to stay
steady. Also, the red brake lite is on that would come on if the
parking brake is on, the manual says this indicates a brake problem.
No joke. I really do not see how I could still have air in the
lines. Brakes are worse than they were before I replaced the rear
wheel cylinders but they were never very good in the first place. The
front calipers and hoses are fairly new also.
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