TM10-3930-660-20 18-15. CARRIAGE TILT CYLINDER - REPLACE (Cont’d) 4. 5. EXTEND CYLINDER TO ALIGN PIN HOLE. Start vehicle and extend tilt cylinder to align cylinder rod eye and pin access hole. INSTALL CYLINDER ROD PIVOT PIN (2). Apply anti-seize compound to pin (2) as installed. 6. 7. 8. a. Install cylinder rod pivot pin (2). b. Install retaining bolt (13) and new locknut (14). SECURE MLRS VALVE COVER. a. Position MLRS valve cover on attachment. b. Apply Loctite 242 to nut (6) threads. c. Place new lockwashers (5) over bolts  (4). d. Secure cover with nuts (6) and bolts  (4). CONNECT  FLOODLIGHT Connect wires (3) to MLRS floodlight as tagged. PURGE AIR BY CYCLING CARRIAGE TILT FUNCTION FIVE TIMES. a. b. c. Start engine, TM10-3930-660-10. Purge air from carriage tilt cylinder hydraulic circuit by operating carriage tilt function five times. Stop engine and relieve hydraulic pressure by operating carriage tilt controls, TM10-3930-660-10. Anytime the hydraulic oil has been drained and changed or maintenance has been done on the hydraulic system, it is possible that the hydraulic pumps have air in the pump cavities. This air must be purged from the cavity before the pump will operate, para. 18-3. 18-62