TM10-3930-660-20 18-19. MLRS ATTACHMENT    -  REPLACE  (Cont’d) Terminals on (16) and (7) are not marked. Refer to tags on terminal screws when installing electrical leads (1) to terminal strips (6), and (7). f. 9. h. i. j. k. Connect electrical leads 51 and 52 (1)  at  bottom  terminal  strip  (7) of box (2). Tighten screws on strip (7) to secure leads. Connect electrical lead 02 at bottom terminal strip (6) of box (2). Tighten screw on strip (6) to secure  lead  02. Connect electrical leads  58, 57, 56, 55, 54, 53, and 71, at top terminal strip (6) of box (2). Tighten screws on strip (6) to secure  leads. Secure cuble  (3) to MLRS attachment (11) with clamp  (32), washer (31), new lockwasher (30) and nut (29). Attach two new tie straps (10) where cable (3) enters box (2). Position cover (5) on box (2) and secure by tightening four screws (4) . 6. PURGE AIR FROM MLRS ATTACHMENT HOIST CYLINDER AND LINES. a. Start engine, TM10-3930-660-10. b. Cycle MLRS attachment hoist cylinder five times. Excessive air in hydraulic system may temporarily prevent MLRS attachment functions from operating. Attempt to operate MLRS attachment functions as required until each function operates smoothly and completely. c. 18-80 Stop engine and relieve hydraulic pressure by operating MRLS attachment hoist controls, TM10-3930-660-10.