TM 9-2320-361-34 15-40. VERTICAL LEVELING WORM GEAR MAINTENANCE (Contd) 1. 2. 3. 4. 5. 6. 7. 8. NOTE ● Install all shims to previously recorded thickness. ● When installing worm gear, check that gear is centered and teeth mesh with worm wheel. If misalined, remove worm gear and adjust backlash by removing or adding shims. Install new shims (20) and worm gear housing (18) on intermediate case mounting studs (22) with four nuts (17). Install new shims (19), two washers (23), and screws (24) on worm gear housing (18) and intermediate case (25). Install new shims (1) and (11) and bracket (6) on power leveler (21) and shaft (16) with two new lockwashers (10) and screws (8) and (9). Install two washers (12), new lockwashers (13), and screws (14) on bracket (6). Install new safety wire (5) on nuts (17). Install sprockets (2) on bracket (6) and tighten nut (7). Install new woodruff key (15) and sprocket (3) on shaft (16) and tighten setscrew (4). Install new safety wire (5) on sprocket (3). 15-156