TM 9-2320-361-34 15-39. HORIZONTAL LEVELING WORM GEAR MAINTENANCE (Contd) 4. 5. 6. 7. 8. 9. 10. 11. Install shaft (6) to extend from worm gear housing (5) as previously measured. Finger tighten adjusting bearing (15). Install sleeve bearing (7) on shaft (6) and into worm gear housing (5). Aline sleeve bearing (7) so screw (2) will pass through slot. Install two new lockwashers (3), screws (2), and setscrews (1) and (4) in worm gear housing (5). Do not tighten setscrews (1) and (4). Ensure that shaft (6) turns freely. Turn shaft (6) until notch in thrust washer (13) is alined with setscrew (4). Tighten setscrew (4) until it touches thrust washer (13) then back off 1/4 turn. Tighten adjusting bearing (15) until shaft (6) does not move from end to end. Ensure that shaft (6) turns freely. Tighten setscrew (1) until it touches adjusting bearing (15) then back off 1/2 turn. Instill bushing (16) and lubrication fitting (17) in shaft (6). Install new woodruff key (11) and sprocket (10) on shaft (6). Install setscrew (9) and install new safety wire (8) on sprocket (10). 15-149