MustangEater82

Any tips on using the vacuum pump pon 4th gen breaks.


Hoping to flush out old and put in new fluid.

any specific rotation that works best? just hook it up to the bleeder and vacuum right?

Lower

I used one to do my brakes, and it worked real well -although I did "cheat" and make the wife come help. Although the Mighty Vac (and similar systems) are billed as a "one man" system, having a second person sure did take some of my apprehension out of doing it.

I put it on the bleed valve, and had the wife get a little pressure in the line. When she varified that it was holding pressure (confirmed that my seal to the bleeder was good) I would open the valve. She'd watch the fluid level in the Mighty Vac catch can, and tell me when to close the valve.

All in all it was way easy to do.

Read over the Mighty Vac manual if you have one.

As far as bleed order, most say bleed the ABS valves, then from the longest brake run to the shortest, then the ABS valves again.

Chilton, however states (without traction control);
rearward ABS valve
forward ABS valve
right rear
left front
right front
left rear
rearward ABS valve
forward ABS valve


Maybe a "pro" will chime in on how the recommend doing it. I chose to follow the Chilton method, because I couldn't see them mistyping that strange order.

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MustangEater82

I read the mighty vac manual, makes some sense but I always like to hear a f-body guy's perspective, since the mightyvac instructions are pretty "general"

shoebox

Use the correct order and keep the master cylinder full. Most times the ABS does not need bleeding. It's pretty easy.

crazypurgatory

I can tell you this much you hand is going hurt.
I would buy one of those one way bleeder screws just pump the pedal.
I use a vacuum can that I hook up to my air compressor.
Works real good. but it ain't cheap I got it from one of the shops I used to work for all it needed was a 5 dolor seal.
I had a link to how to make a pressure bleeder out of a bug sprayer but it's on my dead WD drive.

Chris G.

Lower

shoebox, for my own piece of mind can you confirm or deny that the order I have above from the Chilton's manual is correct?
Thanks!


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shoebox

ABS notwithstanding, it should be bled from the longest pipe to the shortest. That would be:
RR
LR
RF
LF