TM 10-3930-664-24 2-153.  CARRIAGE TILT CYLINDER REPLACEMENT This task covers: Removal, Cleaning, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: References: General Mechanics Tool Kit (1, App.  E) LO 10-3930-664-12 Drain Pan (10, App.  E) Lubricator Kit (35, App.  E) Hoist (59, App.  E) Materials / Parts: Grease (10, App.  C) O-Ring, Item 8 (1 ea.) O-Ring, Item 13 (1 ea.) O-Ring, Item 15 (1 ea.) O-Ring, Item 17 (1 ea.) A.  REMOVAL 1. POSITION   MAST   IN   NEAR   VERTICAL   POSITION.      SUPPORT   MAST   WITH   HOIST.   REST   FORKS   ON GROUND. 2. MANEUVER TILT MECHANISM UNTIL PRESSURE IS RELIEVED FROM TILT CYLINDER ATTACHING PINS. WARNING Relieve  hydraulic  pressure  before  disconnecting  hydraulic  lines.    Pressurized  lines  could  cause serious injury to personnel. NOTE Place drain pan beneath hoses when disconnecting.  Drain hoses into pan. 2-406