jdeereboy

I want to turn my rotors on my '99 4WD dually and want to know if I will be able to take the rotor in still attached to the hub assembly. Or do I need to drive out the 8 studs to take the rotor off from the bearing assembly. Can someone who has taken their rotors off to be turned tell me how it worked? I installed new rotors a while back and I think I have one that is not true and needs to be cut.

fireram

I took mine off about a year ago. They were not severely worn, and could have been turned. But I get my parts at cost from a jobber, IE no mark up from the parts store. It was only 20 or 25 dollars more to get new ones. So I just replaced them.

I replaced mine with 3500 rotors and calipers, they bolt right on, and are just a little bigger.

They were very difficult to get off. Lots of beatin and heatin. The new ones went on with lots of Anti sieze......

I really dont think you will be able to have them turned with the bearing spindal still attached, I dont think it will fit in the lath, but not sure...

Good Luck

infidel

Don't turn them unless they are scored, if they are warped just replace them, the warp will come right back.
Just sanding the glaze off with some fine sandpaper is fine. Over 200k on both my trucks, several sets of pads, stock rotors never turned.

I know some folks who have had their rotors turned with the bearing on, it will take some shopping around to find someone who can do it though. The factory recommended way to turn rotors on these trucks is with the rotor installed on the truck.

oestreich84

You just need to find a shop with an on-car brake lathe. It isn't a dealer only thing, but they are expensive enough that most shops use a regular brake lathe. I have used them many times and they work just as good as a normal lathe. It also takes a lot less time. Make a couple calls to local shops and see if they have an on-car lathe.

J BODY

We have a BINGO!! Use the on car. It will cut the rotor true to the hub. Works GREAT!! FYI, the lathe we have cost a little over 7K.

displacedtexan

It's just my preference...

But, I don't turn rotors, when you reduce the mass of the rotor, you reduce it's ability to disipate heat, which is just all around bad.

Rotors are usually cheap, I just replace them.

jdeereboy

OK, I agree with replacing rotors. But the new rotors needs to be trued up to the hub. This requires them to be turned.

hopak

I have about 3/16" left on pds but there is a ridge on the outer edge of the roter so I assume I will need the roters turned when I replace the pads . Should I replace now or wait until the pads are thinner?

infidel

If you can feel a ridge most likely the rotors are worn beyond turning, it doesn't take much on these rotors to get them below spec. Won't hurt to check but I would plan on new rotors.
I've never had new rotors turned and have never had a problem. My feeling is that if you need a new rotor turned is that the rotor is a cheapo that you shouldn't be using anyway.
You may also consider using a different pad, if you have worn a ridge it indicates the pads were too hard.