What was found
(CAN) M/R GB TEARDOWN REVEALED HEAVY FRETTING & ELONGATED BOLT HOLES ON LOWER SURFACE OF RING GEAR & UPPER MATING SURFACE OF BEARING SUPPORT. HEAVY FRETTING TO LOWER HOUSING & STUD DAMAGE. DAMAGED BACKLASH SHIM. WEAR & DAMAGE IS CONSISTENT WITH LACK OF TORQUE TO NUTS & STUDS THAT CLAMP RING GEAR & BEARING SUPPORT TO LOWER HOUSING. LACK OF TORQUE ALLOWS RING GEAR TO MOVE & FRET SURFACE OF BEARING SUPPORT. MOVEMENT OF RING GEAR AGAINST STUDS WORKS LOOSE & RESULTS IN PULLING OUT OF THREADS IN LOWER HOUSING. ALL HOLES IN RING GEAR & BEARING SUPPORT ARE DAMAGED & ELONGATED. WORST AREA WHERE CRACK PASSES THROUGH SUPPORT & STUD TO INNER SURFACE. MX CHECK EVERY 150 HOURS,