Master Power Brakes Combination Valve Video

[GA-mikb]

This has saved me so much trouble, have this combination, new kit, no instructions. Thank you

[naturestan]

Wish I had bought my valve from these guys! I used Right Stuff and got no directions, no tubes (extra) no valve bleeder tool, cheesy mounting bracket or extra fittings.

[tyclute]

Just finished install. Have ZERO pressure to back bleeders. All new lines. Removed combination valve to be sure that fluid could pass thru both rear and front ports to supply lines with fluid. Still nothing at rear bleeders. Has to have something to do with combination valve??? Yes I used the white lock tool to keep valve centered.

[shshzhxye]

At around 3:24, how does one go about re-centering the pressure differential valve?

Excellent video. I learned a lot. Many thanks.

[lancewhite]

Your the bomb bro, put a new booster, master cylinder and proportioning valve on my custom trike, i know how to do the rod but had never done the plug in the valve, thank you so much

[BeardsandCars]

How do you re-center it once it trips to one side?

[neilbreakwell]

1:50
".. allowing the REAR brakes to apply first" but the animation shows the FRONT brakes applying. Am I missing something ?

[danehart]

HI, I replaced the master cylinder, the proportioning valve, and the 2 lines that connect the two, I bench bled the master, then bled all 4 wheels, BUT when I got to the last wheel (drivers front) there was no fluid coming out of the bleeder valve, so removed it and replaced it (no fluid came out when I pulled it either), still no fluid. Started the car and started slowly pumping the brake and fluid started leaking from where the front drivers brake line is screwed into the new proportioning valve. Also the pedal is now very soft, as it was pretty firm before I got to the last wheel. Could that front drivers line be clogged? I assume you don't replace the proportioning bleed tool with the factory sensor until you're done bleeding all wheels?

[dennakarz]

If your velve prevents rear brake lock up then how can you stop when sliding down hill in the snow. That's a big problem when the rear brakes won't hold. Let me know please

[pcdreams]

How do you reset the valve after blowing a rear line?

[savagebolt]

All I want to know before I rip things apart, do I have to bleed the valve & if yes, how?

[lauradahlus]

How does one re-center the pressure differential valve? 🤔

[garyarcher]

I would like to see someone do this on a 1987 chevy truck where the portioning valve is wedged tight up under the radiator and can't be worked on without removing the entire valve due to obstruction of it's location.

[mattmorrise]

I had this installed on a rig with a chevy 350. A year later and now the hole in the coupling going to the rear brakes is leaking brake fluid.. What is this hole for and can it be plugged?

[AmatuerOasis]

Question, when the low brake fluid sensor is removed, is there supposed to be any pressure or brake fluid in that chamber? I just did a proportion valve rebuild for an 84 Mustang. Different animal, but same function as the proportion valve requires a set screw to hold the internal piston from moving while bleeding brakes. But after my rebuild, my low fluid switch is leaking brake fluid through the top pins. Not the threads. Does that indicate the rebuild wasn't a success? Right now I have the set screw acting as a plug because I cant used the stock low fluid switch. It's possible that when the torched the lines to get them free, they damaged the plastic sensor, but just the same, I was under the impression there wasn't supposed to be fluid under the switch in the chamber where the sensors prong rests in the V groove.

[Zapo]

So to confirm here.

This valve at no point merges the two input sources from the master cycleder? They stay completely separate?

So master cylinder 1 controls front brakes, and master cylinder 2 controls the rear brakes.

If there was a leak in the front brake line, you will still have rear brakes?

[hayzersolar]

question all my brake lines are 1/4. what modifications do i have to do for this to fit?

[derekcrymble]

HOW DO YOU RECENTER THE VALVE ? + I'M WEARING HEAD-PHONES, OFF WITH THAT DAMN AIRGUN !

[Ryan_]

I'm new to the gm brake failure system. I've been reading and researching non-Stop about the many issues. I have a 2000 gmc sierra 1500. 23k miles, already upgraded the brakes, and rotors, has new master cylinder.
Now on one of my cars I removed the abs system and added non-abs proportioning valve, and wondered if the my truck can obtain the same.
So will this device be a solution? I'm going to replace all my brake lines, and really don't want to deal with the abs module. Read alot that it fails. And my rear has been locking up.
I do not want to cause a wreck or have something fail while driving. Safety is my #1 priority at this moment.

[alexandreangelo]

It works like a residual valve too? My car have the master under the floor. Tks