TM10-3930-660-20 18-15. CARRIAGE TILT CYLINDER - REPLACE (Cont’ d) 10. REMOVE RETAINING BOLT (8) AND LOCKNUT (9). Remove locknut (9) and retaining bolt (8) from carriage tilt cylinder base pin (10). Discard locknut  (9). 11. CAREFULLY DRIVE PIN (10) THROUGH CYLINDER BASE MOUNTING POINT AND ACCESS HOLE. Carefully drive pin (10) from inside MLRS attachment, through cylinder base mounting point 12. and through access hole on side of MLRS attachment. REMOVE CYLINDER. INSTALLATION 1. POSITION CARRIAGE TILT CYLINDER IN MLRS CARRIAGE USING HOIST AND SLING. 2. INSTALL CYLINDER RETAINING PIN (10), NEW LOCKNUT (9), AND BOLT (8). a. Install cylinder base retaining pin  (10). b. Install retaining bolt (8). c. Install new locknut (9). Remove caps and plugs as hoses are installed. Wipe all sealing surfaces on valve and hoses clean and dry. 3. CONNECT THREE HYDRAULIC LINES (11). Connect three hydraulic lines (11) to hydraulic cylinder (12) as tagged. 18-61