cgalpha08
Red Skull
Well, I am truly at a loss here, and have tried nearly everything so I am turning to you all hopefully for some help/advice/fame/whatever.
I am in the final stages of my hummer h3 SAS, and am bleeding the brakes, which since I'm posting here is clearly not going well.
Here are the pertinent facts.
-This is not the first version of the sas, a shop did the first one woth a dana 44 and rear axle with stock h3 brakes, rhat worked just fine and was perfect but as we all know, can't just leave anything alone, gotta mod it some more.
-this version has a dana 60 and 14b. The 60 is running stock h3 4 piston calipers thanks to 06h3 and the rear has some jb6 calipers from lugnut 4x4 kit.
-in this process in an attempt to ensure the master never went dry I removed the front brakes and put vacuum caps on the hard line and plugs on the rear soft lines that connect to the axle above the diff. rear lines would leak very slowly, but over a several month period, didn't leak more than like 1/3 cup ish.
-the master never went dry, I checked the reservoir frequenty and it always had fluid near the top.
When I went to reattach everything I had to replace one of the hardlines at the master since the fitting at the soft line end was stripped, meaning I disconnected and reconnected a line at the master, this was the line for the driver front.
I then basically hooked the caliper and soft lines up and then connected them to the factory hard lines, which still had fluid in them at the connection point, but the new soft line and calipers didn't. So obviously there is air in the system.
Here is what I did after that.
I bled the brakes like you normally would right rear left rear, right front, left front. That resulted in a soft pedal and the rear calipers siezed up
I bled this was like 6 or 7 times.
I then got a pressure bleeder that connects to the reservoir cap and tried it that way without an assistan (aka my wife), same result, soft pedal and stuck rears
I then used a caliper tool to push one of the rear pistons back in and it went in fine.
Talking with some buddies I tried a couple of other things.
Bought a scan tool to bleed the abs system, did that twice followed by a bleed and same result
I then did a master cylinder bleed via the procedure in the service manual, same result.
The front calipers aren't stuck, I can see the pistons moving in and out when I push the pedal.
So I am truly at a loss, obviously there is air somewhere in the system, but where? The fluid coming out of the bleeders is solid, no air bubbles, not even the tiniest.
So I am welcoming any and all thoughts, flame me, idc I just want to drive the damn thing. This and assembling my beadlocks is what stands between me and completion.
Would a reverse bleeder help force any air that might be in the caliper back up the line? That's the only method I haven't tried yet.
I am in the final stages of my hummer h3 SAS, and am bleeding the brakes, which since I'm posting here is clearly not going well.
Here are the pertinent facts.
-This is not the first version of the sas, a shop did the first one woth a dana 44 and rear axle with stock h3 brakes, rhat worked just fine and was perfect but as we all know, can't just leave anything alone, gotta mod it some more.
-this version has a dana 60 and 14b. The 60 is running stock h3 4 piston calipers thanks to 06h3 and the rear has some jb6 calipers from lugnut 4x4 kit.
-in this process in an attempt to ensure the master never went dry I removed the front brakes and put vacuum caps on the hard line and plugs on the rear soft lines that connect to the axle above the diff. rear lines would leak very slowly, but over a several month period, didn't leak more than like 1/3 cup ish.
-the master never went dry, I checked the reservoir frequenty and it always had fluid near the top.
When I went to reattach everything I had to replace one of the hardlines at the master since the fitting at the soft line end was stripped, meaning I disconnected and reconnected a line at the master, this was the line for the driver front.
I then basically hooked the caliper and soft lines up and then connected them to the factory hard lines, which still had fluid in them at the connection point, but the new soft line and calipers didn't. So obviously there is air in the system.
Here is what I did after that.
I bled the brakes like you normally would right rear left rear, right front, left front. That resulted in a soft pedal and the rear calipers siezed up
I bled this was like 6 or 7 times.
I then got a pressure bleeder that connects to the reservoir cap and tried it that way without an assistan (aka my wife), same result, soft pedal and stuck rears
I then used a caliper tool to push one of the rear pistons back in and it went in fine.
Talking with some buddies I tried a couple of other things.
Bought a scan tool to bleed the abs system, did that twice followed by a bleed and same result
I then did a master cylinder bleed via the procedure in the service manual, same result.
The front calipers aren't stuck, I can see the pistons moving in and out when I push the pedal.
So I am truly at a loss, obviously there is air somewhere in the system, but where? The fluid coming out of the bleeders is solid, no air bubbles, not even the tiniest.
So I am welcoming any and all thoughts, flame me, idc I just want to drive the damn thing. This and assembling my beadlocks is what stands between me and completion.
Would a reverse bleeder help force any air that might be in the caliper back up the line? That's the only method I haven't tried yet.
