Dual Master cylinder question

Iowa911 · 07-26-2009, 02:52 PM

I am converting to a dual circuit M/C. My question is about the inlets from the reservoir. Is the front inlet for the front circuit and the back for the rears? Logic would say so, but I can't find anything on this. I am in the process of bleeding the new system, the rears went fine, but I am not getting any fluid to the fronts. I'm thinking the inlet tube isn't properly seated. I just need to know which one it is.
Thanks

Bill Verburg · Bill Verburg's Garage

Quote:

Originally Posted by Iowa911

I am converting to a dual circuit M/C. My question is about the inlets from the reservoir. Is the front inlet for the front circuit and the back for the rears? Logic would say so, but I can't find anything on this. I am in the process of bleeding the new system, the rears went fine, but I am not getting any fluid to the fronts. I'm thinking the inlet tube isn't properly seated. I just need to know which one it is.
Thanks

the reservoir feeds don't matter in the least.

Iowa911 · 07-26-2009, 07:11 PM

I messed with this for quite some time tonight. If I crack the bango bolt that goes to the fronts, I am now able to get some fluid when the pedal is pumped. I have checked all of the lines between the calipers and the M/C. I still can't get fluid to come through, either with vacuum or by pumping. What's my problem here? The backs worked perfectly.

911pcars · 07-26-2009, 10:05 PM

Quote:

Originally Posted by Iowa911

I messed with this for quite some time tonight. If I crack the bango bolt that goes to the fronts, I am now able to get some fluid when the pedal is pumped. I have checked all of the lines between the calipers and the M/C. I still can't get fluid to come through, either with vacuum or by pumping. What's my problem here? The backs worked perfectly.

Is this MC brand new or used? If used (even new), the piston cup/seal for the front system could be faulty. Odds are against both front brake fluid flex lines being clogged, but anything is possible.

Sherwood

Iowa911 · 07-27-2009, 06:04 AM

It's new. I am grasping at straws here, but I have a couple of questions. I have the front of the car more elevated than the back for access to the M/C could this cause any issues? Also, could the actuator rod be out of adjustment cause the fronts to not work? I have the correct rod for the dual M/C, but could it need adjustment?