Originally posted by 74Argosy24MH
..... Other than that it is about the same as drums on a car just twice as large.
It's a biiggg pain.
You need breaker bars, heavy jacks, a torque wrench and you will get dirty.
Your leak may turn out to be the oil seal, rather then the wheel cylinder.
The wheel cylinders are almost impossible to bleed without a special (home made) wrench.
The drums should be inspected and turned if needed and new wheel bearings should be installed.
Like John said, if new wheel bearings are installed and you don't torque the axle nuts, they will seat later and you will loose all your gear oil, if not the wheel itself.
Its best to find a trusted big rig garage...
you can pm me if you decide to tackle it.