Mad Vette

Who has used the Mityvac? Dose it work very well? I called the tech at the brake manufacture and they said to just use the gravity method and then pump with your foot once you have fluid to the calipers. I installed a whole new brake system with new stainless steel lines new master cyl and rebuilt calipers. I :confused:

GDaina

you can use the vac to start the fluid moving, then let gravity take over. But I like compressed air, makes short work.

Mad Vette

I thought about getting a pressure bleeder but just did not want to spend the money for a job I only do once every 5 yrs. We used to have one in the gas station I worked at and it sure did make the job easy. But you think that once I get th fluid down to the calipers that I should just use the two person method, someone in the car pumping the pedal and someone at each wheel cracking the bleeder screws?

GDaina

no need to buy a pressure bleeder, make your own...just need an extra MC cover, drill hole, put air fitting, seal hole, use mc gasket, clamp down, attach air hose to chuck, open bleed screw, bleed, close bleed screw, check fluid level in MC, fill, repeat cycle.

It works great, I use the least air pressure, think max 5 lbs.

Duke94

I've used the Mightyvac to bleed the brakes and it works great. Also works great for testing vacuum actuators etc.

vettfixr

I've used the Mity Vac but didn't like the results. It seems that the vac not only pulled the fluid but also pulled air in from around the loose bleeder which made it difficult to see when you had fluid with no bubbles in it. Probably putting some pipe sealer around the bleeder would have made it work better but it was easier to tell my wife "Press this pedal when I tell you". :lol:

Mad Vette

Yes I belive I will probaly have to enlist my wifes help, I hope her show is not on tonight. :rolleyes:

Fevre

Try this:

https://www.corvetteforum.com/techti...=132&TopicID=3

Smokehouse69

MityVac is great for checking for vacuum leaks and operating vacuum devices, but it doesn't work very well on Corvette brakes. Gravity bleed is a good way that doesn't require any special tools. GDiana's pressure method is the fastest and surest way to do the job, by yourself.

ddecart

I had the same problem. A little teflon tape around the screw took care of it.

ROD NOCK

Been using 'em for over 25 yrs. for all tasks. On my second one. Works great! :chevy


[Modified by ROD NOCK, 9:53 PM 10/1/2003]

ksbunting

I just replaced the entire brake system on my 68, booster, master cylinder, lines, etc.
Tried to gravity bleed and couldn't get it to start over many days. Finally bought a mighty vac to get the fluid moving and then once it started I let gravity do all 4 wheels. Worked great and as Duke 94 said you can use it for testingother vacuum operated items also. I have heard that mightyvacs can suck the fluid right past the rubbers in the wheel cylinder causing leaks if you use to much vacuum, but I only pumped it up part way to get the fluid started. Don't overdo it.
I have a nice hard pedal now.
I bought it at Sears and it is a nice tool to have. Recently removed and refurbished the HotWater valve in the car and was able to test it before reinstalling, with the Mightyvac.
In my case, it has already paid for itself.
Kurt 68 T top L79 resto