TM 9-1240-400-34&P
5-19. FINAL INSPECTION INSTRUCTIONS (CONT).
CHECKING AND ADJUSTING ELEVATION KNOB TORQUE AND BACKLASH (CONT)
10 Loosen setscrew (19), drive out tapered pin (20), and remove bevel gear (21) from worm shaft (22).
12 Install bevel gear (21) on worm shaft (22) with setscrew (19) and pin (20).
13 Install telescope mount subassembly (17) over two pins (18) in housing (14). Carefully mesh bevel gear (21) and gear
(24) and check for 0.001 in. (0.025 mm) maximum backlash. 14 Install three lockwashers (16) and three capscrews
(15).
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