Brake drum specifications

[Brian46]

I have a 931A2 and am trying to find the new and maximum diameter specifications for the brake drum, I can't make out the markings on the drum.

Thanks

 

[Brian46]

Even if someone could measure the inside diameter of a 939 series 5 ton drum they have and post it, it would be very helpfull to me.

 

[porkysplace]

Did you try googling the part number from the TM

 

[Brian46]

Did you try googling the part number from the TM

Yes, I tried googling everything I can think of to try and get the measurements.