What was found
UNIT RECEIVED FROM DTA FOR EVALUATION. INSP DETERMINED UNIT DESTROYED FROM FAILURE OF DRIVE END BEARING. BEARINGS WERE OF LUCAS P/N. SHAFT SHEARED, ARMATURE DESTROYED FROM DRAGGING ON FIELD POLE SHOES. FIELD DRUG OUT, DRIVE END BELL DESTROYED. UNIT HAD OVERHAUL TAG FROM AMR-COMBS. NO TT OF TIME SOH DETERMINED. BEARING MFG THOUGHT TO BE 1997. IMPOSSIBLE TO DETERMINE BALANCE CONDITION OF ARMATURE. RECOMMEND WORK ORDER INFO BE SOUGHT ON BALANCE RECORD OF ARMATURE AT O/H. SUBMITTER STATED BEARINGS DO NOT FAIL UNLESS OUT OF BALANCE CAUSES EXCESSIVE RADIAL LOAD TO BE IMPOSED.