anyone ever bleed em like this?

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diymirage

diymirage

HP@idle > hondaHP@redline
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i got to replace a caliper on the plow truck tomorrow, and im thinking of using this method, anyone ever try this?

(on a side note, one side needs a new caliper, the other side needs a new bracket, and the price difference is $65.00, any reason not to put two new calipers on?)

 
What is the plow truck? I do this on GMC's with ABS... pressurize the reservoir, crack the bleeder and force the fluid into the caliper and the air comes out.
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Doesn't "bleed" ABS... but it certainly forces fluid through the system to bleed new caliper. I've also used it after replacing full lines from the ABS module under the drivers seat area to a caliper without issues and good solid brake pedal..
 
I made a system to bleed brakes in a similar way. Its an old gas bottle with fittings to hook up an AC vac pump to pull vacuum on it. Hose connects to the bleeder and I simply crack the ball valve and it instantly pulls all the air out of the system. Works like a champ.
I tried those mityvac hand pumps but never had much luck with them.
 
I believe in pressure bleeding (nothing to suck in air) or with a pedal, which is obviously hard "by yourself" I DID score a thrift store pneumatic piston designed to manipulate the pedal by air while "you" are under "it."

But I've bought 2 or 3 replacement master cylinder caps, drilled and tapped them for an air fitting, and bled them with air power. THAT works WELL except for my 04 GMC, 4x ABS, which I have yet to get straightened out. The damned ABS module is under the truck.
 
My only concern is air getting sucked in thru the threads of the bleeder screw.

Gravity bleeding is also an option. Same bottle and hose, but set it below the level of the bleeder and crack open the bleeder screw. Fluid will travel out of the MC and to the bleeder and out the hose to the bottle.
 
in case you guys are wondering, this is what needs to be replaced

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funny thing is, the sliders on that side are fine
the ones on the drivers side are rusted solid
 
I have a cheap Harbor Freight type of manual vacuum pump that attaches to the bleeder screw, works reasonably well I guess.
 
Many many times i just gravity bleed. Doesent always work.
Last round with chevy astro, entire front portion of brake system was air locked. Once i got fluid flowing through master and abs, it poured pretty good.
 
Fill master, replace calipers. Open bleeder after each caliper is replaced and wait for fluid, should be less than a minute for fluid to show. Close bleeder, change other side and bleed again. Then go pump brakes, keeping master full. Crack bleeder one at a time,should get a little more air. Done!

get air in system and its a different game alltogether.
 
I have my wife pump the breaks... ive also used a syringe bleeder to force air through the lines.

Drum brakes on the rear dont gravity bleed at least Ive never gotten mine to gravity bleed lol.
 
Got the calipers back on (with a little help)

They gravity bled just fine, but just to be sure, im gonna have the boy pump em a few times when he comes home from school, and bleed em that way

(I figured, at 8000#, it's probably better not to have any air left in em)

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diymirage said:
Got the calipers back on (with a little help)

They gravity bled just fine, but just to be sure, im gonna have the boy pump em a few times when he comes home from school, and bleed em that way

(I figured, at 8000#, it's probably better not to have any air left in em)

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Awwwww what a cutie! She's your "little help". LOL
 
toolmanmike said:
Awwwww what a cutie! She's your "little help". LOL
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she sure is
she too young for school so me and her have the entire day together and she loves it
i asked her if she wanted to stay in and watch some TV but she wanted to be out and wrench with me

typical michigan girl too, its 30 degrees out there and shes wearing open toed shoes working on her truck
 
diymirage said:
and never an issue?

if i understand it correctly, that just means popping the bleeder and waiting for it to drip, tighten up and done, right?
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Pretty much. It depends how the pedal feels. Sometimes after pumping toe pedal up after bleeding I will let it set a few min and bleed again. You might get a little air out but usually not much. Like Tooljunkie mentioned above.
 
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