wdchuck
Addicted to ArboristSite
The clutch on my F350 disintegrated in the early spring and it was pushed into the garage for a comfortable place to do the deed. Well, even though parts removal went pretty well, the assembly was just completed today, you know how it goes sometimes. There were no puddles under the truck in spring, but during the summer one showed up, brake fluid. Well, since the front end was up on stands anyway the truck wasn't going anywhere so that could wait until the initial work was done and so it did until today, all done.
The line that was bad went from the master cylinder to the equalizing or differential RABS unit, at least that might be the name for it. Inside the drivers frame rail under the firewall is a block with a pigtail and two brake lines sprouting from it; one to the master cylinder, one to feed the rear brakes. The unit, rebuilt, is over $200 if you can find the right one. Trying to fit the lines to it is another matter, tedious, inexpensive, but possible.
The purpose of the unit, to my understanding is to equalize the rear brakes but when the unit is failing or failed, then the pedal gets pretty squishy and goes nearly to the floor for complete braking. Bleeding the rear brake lines from master cylinder to the farthest drum has a particular sequence and should be followed.
The moral here is, check your lines before you have to check your shorts.
The line that was bad went from the master cylinder to the equalizing or differential RABS unit, at least that might be the name for it. Inside the drivers frame rail under the firewall is a block with a pigtail and two brake lines sprouting from it; one to the master cylinder, one to feed the rear brakes. The unit, rebuilt, is over $200 if you can find the right one. Trying to fit the lines to it is another matter, tedious, inexpensive, but possible.
The purpose of the unit, to my understanding is to equalize the rear brakes but when the unit is failing or failed, then the pedal gets pretty squishy and goes nearly to the floor for complete braking. Bleeding the rear brake lines from master cylinder to the farthest drum has a particular sequence and should be followed.
The moral here is, check your lines before you have to check your shorts.
Last edited: