Johnny V
NAXJA Forum User
- Location
- Jersey Shore
I replaced my front calipers and hoses and now the brake pedal is really spongy when the engine is not running and goes right to the floor when the engine is running.
I did a lot of searching on this forum and some suggestions were to check that the calipers were installed proper side up. I’m pretty sure they are...see picture below. Another suggestion to “bench bleed” the master cylinder but before I do that I’d like to know if I can avoid it.
Here's a few of my search results if interested:
http://www.naxja.org/forum/showthread.php?t=82114&highlight=bleed
http://www.naxja.org/forum/showthread.php?t=80095&highlight=bleed
To refresh everyone’s memory last month after I installed new hubs and u-joints my front brakes would overheat like a MOFO. Prior my brakes were fine and I’m still not sure why the overheating problem occurred, I was going to trouble shoot, but decided just to replace the calipers and hoses since they are the original for my ‘89 Laredo - no ABS. Also I think the brake fluid is from 1989 too!
Here’s my post from last month if interested: http://www.naxja.org/forum/showthread.php?p=714996
I installed reman calipers and new YJ brake hoses as I will be lifting my jeep later in the summer.
I started with the driver side by taking off the banjo bolt and letting the brake fluid drain until it stopped. I checked the brake fluid level and it was half way which I thought was kinda odd as I was expecting the master cylinder to be dry.
Then I did the same to the passenger side and but this time very little fluid came out and I thought that was odd....also the master cylinder was still half way.
Anyway I install calipers and brake hoses; sucked out the brake fluid in both front and back master cylinder reservoirs; wiped clean, then filled with new brake fluid. Geez forgot how clear brake fluid is!
I then proceeded to use a hand vac to bleed the front brakes but couldn’t really tell if there was a smooth stream coming out through the clear plastic hose. In the end I did it the old fashion way and had a helper pump up the brakes and bleed each.
Unfortunately the brake pedal is really spongy when the engine is not running and goes right to the floor when the engine is running.
So I’m not sure how to proceed!
Could the extra height of the YJ brake hose hold air and no amount of bleeding will help?
Why wouldn’t all the brake fluid drain after both hoses were disconnected?
When I use the hand vac does the master cylinder need to be open or shut or it doesn’t matter? My guess it doesn't matter?
Thanks guys! I'm at my wits end! I miss my Jeep!:shiver:
I did a lot of searching on this forum and some suggestions were to check that the calipers were installed proper side up. I’m pretty sure they are...see picture below. Another suggestion to “bench bleed” the master cylinder but before I do that I’d like to know if I can avoid it.
Here's a few of my search results if interested:
http://www.naxja.org/forum/showthread.php?t=82114&highlight=bleed
http://www.naxja.org/forum/showthread.php?t=80095&highlight=bleed
To refresh everyone’s memory last month after I installed new hubs and u-joints my front brakes would overheat like a MOFO. Prior my brakes were fine and I’m still not sure why the overheating problem occurred, I was going to trouble shoot, but decided just to replace the calipers and hoses since they are the original for my ‘89 Laredo - no ABS. Also I think the brake fluid is from 1989 too!
Here’s my post from last month if interested: http://www.naxja.org/forum/showthread.php?p=714996
I installed reman calipers and new YJ brake hoses as I will be lifting my jeep later in the summer.
I started with the driver side by taking off the banjo bolt and letting the brake fluid drain until it stopped. I checked the brake fluid level and it was half way which I thought was kinda odd as I was expecting the master cylinder to be dry.
Then I did the same to the passenger side and but this time very little fluid came out and I thought that was odd....also the master cylinder was still half way.
Anyway I install calipers and brake hoses; sucked out the brake fluid in both front and back master cylinder reservoirs; wiped clean, then filled with new brake fluid. Geez forgot how clear brake fluid is!
I then proceeded to use a hand vac to bleed the front brakes but couldn’t really tell if there was a smooth stream coming out through the clear plastic hose. In the end I did it the old fashion way and had a helper pump up the brakes and bleed each.
Unfortunately the brake pedal is really spongy when the engine is not running and goes right to the floor when the engine is running.
So I’m not sure how to proceed!
Could the extra height of the YJ brake hose hold air and no amount of bleeding will help?
Why wouldn’t all the brake fluid drain after both hoses were disconnected?
When I use the hand vac does the master cylinder need to be open or shut or it doesn’t matter? My guess it doesn't matter?
Thanks guys! I'm at my wits end! I miss my Jeep!:shiver: