Brakes..bleeding and other stuff

Cody

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Supporting Member
Location
Gastown
I'm trying to get my new rig together in time for moab this weekend. It's a 98 ZJ and has a dyantrac 60 rear. When I drove it home from the gas station (about 20 blocks) I parked it and could smell brakes. The passenger rear wheel was super hot, the rotor was really really crazy hot.

I took it apart the next day and I couldn't depress the piston on the caliper. After a lengthy and frustrating search, i was able to find a matching caliper (82 cadi seville if anyone cares) and replaced it. I bled that brake and took it for a spin. The brakes are really soft. Almost to the floor.

My question is, 1) can air go back up the lines and get trapped at one of the other corners and 2) since the jeep has been sitting almost completely unused for the last 1.5 years in a humid environment, could water have gotten into the brake fluid and if so could that cause this? They didn't seem unreasonably soft when I drove it home, so I made it worse.

Also, if it were your rig and you know that 40 miles ago on the odomoter everything was changed---plugs/cap/rotor/belts/fluids/coolant etc etc to the tune of $1400, but it was 1.5 years ago....what would you go through and change?

also also, given how hot that passenger rear got, should I be worried about the heat cooking the bearings in that axle?

Cody
 

Bart

Registered User
Location
Arm Utah
I wouldnt' read more into that what is apparent now. Run it and watch it. I doubt water got in, but I'd bet you have some air in the sytem. If you pump them up, does the pedal get stiffer? Run it a bit and bleed them again. As for the fluids, I'd run them too. See you in Moab.
 

78mitsu

Registered User
sometimes it takes a little bit of force to get the system to properly balance after you've had the brakes apart. I usually after a brief warm-up period accelerate to about 30mph, then put the brake petal on the floor, do it 4-5x with about 2-3 min between.
 
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