12' Gecko Build

[desertrunner]

I would consider doing the master cylinder bench bleed

Not saying it can't be done but I'd have to peel back quite a few other things with rhe motor swap to get to it.

Is there a better way to get air out out of the master without removing it?
Just burn through a bunch of fluid and open the front left caliper and pump away?

 

[jeeeep]

Not saying it can't be done but I'd have to peel back quite a few other things with rhe motor swap to get to it.

Is there a better way to get air out out of the master without removing it?
Just burn through a bunch of fluid and open the front left caliper and pump away?

not that I know of, that master can hold a surprising amount of air

 

[desertrunner]

not that I know of, that master can hold a surprising amount of air

Worth a try to have a buddy build pressure on the pedal and I crack the lines on the master? I can get to the lines on the master from the bottom. Id have to remove all the GM computers to get to the master from the top

 

[jeeeep]

Worth a try to have a buddy build pressure on the pedal and I crack the lines on the master? I can get to the lines on the master from the bottom. Id have to remove all the GM computers to get to the master from the top

thought about it that as well but it would suck air back in.

Thinking it thru, you may be back to your idea using a friend to pump the brakes, using a larger bottle (maybe 2 liter) with brake fluid in it so the hose attached to the bleed valve stays submerged, you keeping the reservoir full and your friend pumping the brake until the air bubbles are out, abs bleed, repeat, then do the other side.

can you put lines on the master to do a bench like bleed?

don't forget brake fluid eats thru a lot of stuff, wear nitro gloves

 

[desertrunner]

So I tried just opening the front left and pumping the pedal, burned though a bottle of fluid to see no bubbles and no change in the pedal.

Went down to autozone and bought a bench bleeder and hooked it up just on the vehicle using the pedal to cycle the piston and it definitely had air moving. Its bubble free now using the bench bleeder. Gonna hook the lines back up and re bleed the rest of the system and ABS and hope for the best

 

[jeeeep]

So I tried just opening the front left and pumping the pedal, burned though a bottle of fluid to see no bubbles and no change in the pedal.

Went down to autozone and bought a bench bleeder and hooked it up just on the vehicle using the pedal to cycle the piston and it definitely had air moving. Its bubble free now using the bench bleeder. Gonna hook the lines back up and re bleed the rest of the system and ABS and hope for the best
View attachment 427136

it's wild how much air those hold and how only bench bleed seems to get it out

 

[desertrunner]

Ok so this is where I'm at.

"Bench blead" the master cylinder
Ran the ABS bleed again
And blead at the calipers again.

The pedal is still super soft. I put it in neutral and pushed it a bit to at least confirm it will stop. At least enough for me to drive it around the block.

Pulled out of the garage for the first time in 5 months! My roof rack cleared the garage door by like 1/8" big win for me there.

Made it all of 5' down the driveway heard some metal grinding and clink and the wife say something fell off.... great . Turns out the wheel weights didn't clear the calipers. Not this biggest of deals but a little annoying considering i ordered them as a package from fusion with the axles...

Anyway pulled the front wheels off stripped the weights amd took it for a drive around the neighborhood. It does stop BUT idk that I'd feel confident taking it out on the street. Takes about 40' to stop from 15mph with full pedal.

And also my E brake doesn't do jack shit


So 2 bigs wins of first drive in 5 months and it fits out of my garage but still plenty of work to be done

 

[OverlanderJK]

I’d be pissed about the calipers hitting. What happens on the trail when a little pebble gets caught in the wheel? I get tight clearance but that is a bit much.