TM 10-3930-659-34 5-12. TRANSMISSION CLUTCH PACKS AND IDLER GEAR MAINTENANCE (Con’t). WARNING Wear   protective   clothing   (goggles/shield,   gloves,   etc.)   when   heating   parts   and handling hot parts.  Hot parts can cause severe burns. CAUTION DO   NOT   use   a   torch   to   heat   transmission   assembly   housing.      Housing   may become warped and equipment damaged. 7. Using  a  heat  gun,  heat  third/fourth  gear  clutch pack  bore  (113)  on  both  sides  of  transmission assembly (1) for 30 minutes. 8. Install new preformed packing (7) on first/forward gear axle (2). 9. Remove  heat  gun  and  install  first/forward  gear axle (2) on transmission assembly (1) with three nuts (3).  Torque nuts to 18 lb.-ft.  (25 N•m). TA708295 5-114