TM 10-3930-659-34 5-17. DIFFERENTIAL ASSEMBLY MAINTENANCE (Con’t). 4. Remove  breather  (11),  preformed  packing  (12), and   breather   tube   (13)   from   front   differential housing (14). Discard preformed packing. 5. Remove  plug  (17)  and  preformed  packing  (18) from front differential cover (19). Discard preformed packing. 6. Remove   ten   screws   (16),   washers   (15),   and front differential cover (19) from front differential housing (14). 5-166