TM 10-3930-659-20 17-10.    LOCKING CONTROL VALVE REPLACEMENT. This Task Covers: a.  Removal b. Installation Initial Setup: Equipment Conditions: Materials/Parts: • Parking brake set (see TM 10-3930-659-10). • One preformed packing • Carriage assembly lowered to ground Tools/Test Equipment: (see TM 10-3930-659-10). • General mechanic's tool kit (Item 44, Appendix F) • Carriage tilt cylinder hoses, lines, and fittings removed (see paragraph 17-23). References: • Carriage tilt cylinder lubrication hose and • TM 10-3930-659-10 fittings removed (see paragraph 17-24). a. REMOVAL NOTE One mounting screw was removed when carriage tilt cylinder lubrication hose was removed. Remove three screws (4), locking control valve (3), and preformed packing (2) from carriage tilt cylinder (1).  Discard preformed packing. b. INSTALLATION NOTE Fourth mounting screw will be installed  when  carriage  tilt  cylinder lubrication hose Is installed. Install  new  preformed  packing  (2)  and  locking control valve (3) on carriage tilt cylinder (1) with three screws (4). FOLLOW-ON TASKS: • Install carriage tilt cylinder lubrication hose and fittings (see paragraph 17-24). • Install carriage tilt cylinder hoses, lines, and fittings (see paragraph 17-23). TA707635 17-33