Spring repairs

[WeekendWrangler]

Where I'm at now:

Rear end on jacks, old axle shafts out, old emergency brakes removed.

New axles are Yukon chromoly upgrade.

A few questions for those of you who maybe have been through this?

1. I opted to replace the entire parking brake module (plate and hardware).
The old ones had to be tapped off with a hammer. Are they press fit? It seems like it but I don't want to destroy my axle hammering them on if it's not right.

2. My rear ARB air locker is leaking. Its definitely inside the diff, I popped off the cover but it doesn't sound like the fitting or seal or along the copper air line. It sounds like "inside"? I will probably take it back to the installer, but I was hoping to fix myself. The carrier seems extremely tight and I don't want to pull anything apart I can't put back together safely

It does seem to work, maybe? If not for leaking. I think it needs a rebuild

Wish me luck and hopefully I will be ready for the spring meeting!

[WeekendWrangler]

Well I finally found a video where showing replacement of the entire parking brake module:



I think I ordered cheapo ones (Dorman?). Maybe a Mopar part will fit better? I cleaned up the axle tube end quite a lot but I bet a little more sanding wouldn't hurt.

[MDSRACING398]

The arb does not put air in the actually locker. There is a collar on the side where the copper line attaches to. That has o rings on it that go bad usually when over pressurized or oil is contaminated. The carrier needs to come out to change it.

[WeekendWrangler]

Ahh, ok. yeah so if air is just leaking past the seal it would probably sound just like I'm hearing. I have a replacement seal in hand... we'll see.

[WeekendWrangler]

Unfortunately, it is not the air seal. There's something worn or damaged internally.

I have it out on the bench, with a new air seal collar and o-rings, and I can engage it (a shop air compressor), feel and hear it lock and unlock. But while it is engaged, there is a definite leak of air from somewhere inside.

I'll be calling the original installer for help at this point.... :facepalm: