Brake drums for 92 C2500

[ahansel1229]

I can't seem to find the right brake parts for my rear-end. It's a 92 C2500 with a 7.4
Every website I look on has drums that do not have the lugnuts in them or have a place for the seal and bearings what am I missing does it have a different rear-end then stock mabey?

 

[Schurkey]

MY 2500 with 7.4L uses the 10.5" full-float axle with 13" drums. The drums are "riveted" to the hub with the lug studs. The drums do not slide off the hubs until you press-out the lug studs. I think this indicates 2.5" wide shoes.

It may be that the larger, 3.5" wide shoes have slide-off drums.

Kinda guessing you have the "riveted" drums, so you'll likely need new lug-studs to reattach to the hubs/bearings you already have.

Good luck. My truck has rotors that attach to the front hubs the same way. I broke the old rotor trying to press the lug-studs out. Had no fun pressing the new ones back in, and I was using a 20-ton press.

DOWNLOAD THE SERVICE MANUAL FOR YOUR VEHICLE from the links on this web-site.

 

[ahansel1229]

My hub slide right off when I take the center nut and axle out.

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[Schurkey]

My hub slide right off when I take the center nut and axle out.

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The issue is getting the drum off of the hub, not getting the hub off of the axle assembly. New drums don't come with hubs. I suppose you could buy a drum, a hub w/bearings, and the lug studs...but why replace the hub 'n' bearings if there's nothing wrong with them?

WHY are you replacing the drums? Have you measured them, and discovered they're worn-out? Warped? Cracked? There's a really-good chance that there's nothing wrong with them once cleaned-up. Obviously, you're gonna need new grease seals.

 

[GoToGuy]

Before you destroy that seal , record the numbers. What is your objective here? Brake job? Brake problem? The plan or objective drives the answer you need.

 

[ahansel1229]

My plans was to rebuild the brakes since both axle seals and a cylinders blew out I'm assuming the gear oil ruins the pad material.

 

[GoToGuy]

Unless you catch it right away, brake fluid or gear oil wants to soak into the brake linings.
Personally, if I didn't see it happen right in front me, I consider them no longer serviceable , must be replaced.

 

[ahansel1229]

Okay thanks it's the 13 x 2.57 size shoes I hope (that's the largest size I can find local for my truck) The haynes manual doesn't have the axle size I got.

 

[Schurkey]

Do you have a hub where you remove a bunch of bolts, and the axle shaft slides out? That's a full-floating axle, which on a GMT400 that isn't something really goofy like a C3500HD or a chassis-cab, would have to be a 10.5" ring gear, "14 bolt Full-float" axle.

Brake shoes could be 13 X 2.5, or 13 X 3.5 depending on options and/or GVWR.

 

[Schurkey]

DOWNLOAD THE SERVICE MANUAL FOR YOUR VEHICLE from the links on this web-site.

The haynes manual doesn't have the axle size I got.

Haynes, Chilton, Clymer...great emergency toilet paper.

DOWNLOAD THE SERVICE MANUAL FOR YOUR VEHICLE from the links on this web-site.