TM 10-3930-671-10 (14) Drain hydraulic reservoir, change main hydraulic filters, and fill reservoir with recommended fluid. (15) Ensure that direction control levers are centered (NEUTRAL). (16) Engage parking brake. (17) Remove and clean batteries.  Store batteries in a cool, dry place and keep them fully charged. (18) Drain cooling system and close drain cocks. (19) Disconnect  air  intake  piping  from  the  manifold. Pour  3  ounces  (90  ml)  of  inhibitor  into  intake system and connect the piping. (20) Seal    all    engine    openings    with    weather-proof tape. (21) Clean    exterior    of    the    truck    and    touch    up scratched, chipped, or painted surfaces. (22) Coat  all  exposed  metal  surfaces  with  grease  or corrosion inhibitor. 1-7 (1-8 blank)