firenut

In the attached pictures I have these hairline cracks in both front brake drums. They are still smooth, but regardless have the cracks.. is this critical or are they okay to continue to use? The truck is an antique and is driven about 10-15 times yearly.

Thanks! How do you back it off? Is there a bolt or??

So the problem is I don't even see a slack adjuster...

Thanks. The front brakes are "free" and the wheel spins. Do I still need to back off the brakes? That might be where I'm screwing it up. If so how do I back them off??

I am trying to remove the front wheel from a 1972 Mack CF with Spoke Wheels. I have the tire and outer rim off, the axle nut off, however the spoke and drum will not come completely off. The outer bearing comes out fine, however the entire spoke and drum assembly only moves about 1/4". Can anyone advise what I am doing wrong?? Thanks in advance.

I replaced both and I put oil on the drive cable inside the housing. I am guessing there is a process for this but I can't find anything that makes sense...

I have now replaced the RPM Guage cable on my CF 3 times. Each time it works fine for about two hours and then the tang breaks off in the Guage itself. I have replaced the guage, and obviously the cable. Any ideas what could be causing this??

The TAC cable runs directly from the top of the engine nearest the fan up through the cab floor into the guage. there is only one way to connect this cable, so I know its correct and I only hand tightened it on the guage end. You mentioned oil... The Mack store said this cable is ready to install the way it came. I did not put any oil in it. could that be the problem? I didn't notice any in the original cable either.

The cable is complete from Mack as the replacement. It comes with both pieces (inner and outer). I would certainly be happy if I could just replace the inner core.... it would seem cheaper.

It was the TAC end, not the drive end. That plastic piece is in good shape.

Thanks. I did forget to mention that I did that and it was free. strange thing is that it happend both times after the truck was running for about 20 minutes.. not immediately...

Yep, replaced both, both times. I have checked and see no place where it's "over taught". I am at a complete loss...

Yep, replaced both, both times. I'm stuck..on what it could be and at $160 per cable from Mack... it's getting costly...

I am having problems with my RPM gauge. The cable broke (tip that goes into the gauge) and I replaced it. That cable then broke and I replaced both the gauge and the cable again. Now again the cable broke in the same place. Can anyone give me some insight on the problem? I am at a loss...

Awesome. I will follow your advice! Thanks!!