warped brake roters

At least your rotor didn't separate...





It didn't sound too good, but braking was still adequate. No brake pad indicator light went on. All my outside pads wore faster than the inside pad that had the low-pad sensor.

lryrob9301 wrote:
At 100,000 miles I would suspect the rotors were worn thin and needed replacing.

Under normal conditions, 100K miles will do little if any wear to brake rotors. Serious rotor wear would come from running pads to "steel on steel", and or turning (machining) them too many times.
Then again, if they were run a lot in sand and gravel, that could take its toll on rotors I'd guess, but I have never seen that.

Salvo wrote:
At least your rotor didn't separate...





It didn't sound too good, but braking was still adequate. No brake pad indicator light went on. All my outside pads wore faster than the inside pad that had the low-pad sensor.

I think I can read a news paper through those things!

I remember seeing stacks of pallets of rotors ready to be machined at the CINSA plant in Monclova Mexico. They were for Ford F-450 chassis. Direct from the Sicartsa steel mill.

I elect to remain with OEM grade pads and not be tempted by sintered metal or ceramic.

When you buy a new set of rotors, have them turned before the first install. New rotors are warped from the manufacturer due to production and cooling. I've worked on more brakes than most people, and I've never seen good rotors out of the box.

If I counted right the OP is on his 3rd set of rotors. The factory ones plus the two replacements.

I would have the rotors trued up/turned, checked for proper thickness and go from there.

just to clarify; this will be the third set of rotors from new.
I fitted the last set myself; with new pads.
i torqued the wheels of properly. Not using an air gun.
This style of van' went out of production a long time ago
oem parts are difficult to find and very expensive.
The rotors were not worn and the pads were still good.
When the brakes cooled down; the brake shudder was not so bad but it came back again under heavy braking
anyway I've bought new brake rotors; Chinese and new brake pads Chinese the only thing I could find made in the US was the grease for the wheel bearings
it's sad isn't it
I'm rebuilding the brakes carefully and checking the steering components out for wear. But I have found nothing obvious
apparently no one thinks that the flying saucer wheel trim covers may have contributed to the overheating problem. The wife will be pleased because she's loves them.
When I have finished the front brakes I may check the back ones out if I have time before I go to Florida
thanks for the input guys

That old and all those miles, I must ask: Have you replaced the Flexible Brake Hoses??? They can break down internally and become "one way." Fluid pressure from brake application can't fully escape the calipers. The brakes drag, overheat...

What pads are you putting on?
Did the old pads wear evenly?
Have the rears been verified to be in proper order?

Let me re-visit some of the remarks about the Rear Drum Brakes. Our first Class C was Ford, but it was Front Disc/Rear Drum. It had been sitting, or at least infrequently used, for years. I did a front disc job with Pads, Calipers and Hoses. Calipers/Pads were so stuck the Pads came out in rust-crusted pieces after beating them apart. Braking much better (at least we had some...) but not Good. Couple years later, tackled the rear with help from an experienced truck mechanic. Well, actually I helped him... What we found was, Yes, stuck adjusters. But more than that. Stuck Wheel Cylinders. And NEW linings. AND Drums with machining marks in the braking surfaces. Somebody did a brake job then parked it long enough that the Cylinders Rusted Stuck and the New Shoes never applied to the Re-Surfaced (or maybe new) Drums.
The Front Disc Brakes WILL stop a Class C. At least with tons of following distance, and we had a few close calls. But that will overheat the Front Brakes, Glaze the Pads, Warp the Rotors, so on and et cetera.
So "are the Rears in Good Order?" is an outstanding question.