New rear brakes lines won't bleed

Yea, right track but odd. You sure you didn't kink or crush it somewhere? M/C is full on both sides? How are you bleeding? If you're not using vacuum you might want to invest in a $30 hand pump.

|William Holiday wrote: |> Hi, |> |> 91' Ranger. Corrosion caused a line failure in the rear of the truck |> and I ended up replacing everything from front hookup(proportioning |> valve?) - lines, hose & cylinders. I used prebuilt lines so I only had |> to bend not flare. This vehicle had 1/4 inch components and 3/16 line |> so there were some adapters used at the PV and at the cylinders. |> |> I finished the installation, added some fluid and started to bleed but |> I'm getting no fluid to the rear. Line blockage? Work my way back |> along the lines until I find the blockage and then replace the blocked |> section? Right track? |> |> Thanks - |> |> Bill | |Yea, right track but odd. You sure you didn't kink or crush it |somewhere? M/C is full on both sides? How are you bleeding? If you're |not using vacuum you might want to invest in a $30 hand pump.

I was careful. I think there's a possibility that while fitting the pieces together I could have picked up some debris to create a clog but I don't think there's a kink.

I have a vacuum pump, I was using that but when nothing was happening I also had a friend work the pedal.

It's a RABS system. I haven't done one of these before, and I just have a feeling that the rear has been shut down some how.

That's why I posted. It IS ODD but it might make sense if the rear has been shut down. The battery is out of the car, I'm hoping that when I pop it back in tomorrow, a valve will open the rear line and I'll just do a normal bleed and be done.

Thanks for the reply

Try having someone pump the brakes and then instead of opening the rear bleeders, crack open the rear brake line on the master cylinder itself. Sounds like there is air there somewhere, it may be right in the master cylinder.

Once thats done, then try bleeding the rear brakes. You may even have to bleed both fittings at the front and back of the RABS module.

Sharky

It's not odd that the rear brakes would be blocked. The dual-circuit safety system (the physical one, not the ABS) is supposed to shut down the rear brakes when the line fails. The is a feature of the little spool valve that most folks call a "proportioning valve". You need to figure out how to get that valve centered up again.