[TowerTalk] Cracked flange on bearing on Drum of HDX-689

[Jim Thomson]

OK.. I just discovered I have  2 x cracks  on the flange portion of the bearing, that's on the end of the drum... the end that has the big chain drive on it. 

There is a bearing on each end of the  drum..and both appear identical to the  TB2-US  bearings, that's  also used on the mast. 

There is a solid  2" shaft that runs the full length.    It appears to be welded to the drum assy, at each end.     There is also a pair of sprockets on the end of the shaft 
that are held in with a keyway.    The gearbox redux drive  runs on a track.. and can be shifted to the left abt 1".... and the chain will come off. 

What's the trick on getting the  keyway apart ? 

There are 2 x  cracks in the flange..and both go right through to the bolt hole !   These bearings are a 2 x hole mount. 

Plan B, is I could loosen the bolt on the bad bearing, and pound the small piece  back into place..then weld it.   I could also weld the bearing flange   onto the 3/4" thick steel end plate.  

Has anybody else had this problem before ? 

Tnx... Jim  VE7RF