TM-9-2350-311-34-2 Maintenance Manual for Volume 2 M109 Cab Download
Page 429 of 552
TM 9-2350-311-34-2 d. Assembly 1 Invert commander’s cupola (4). NOTE Slot on inside of each bearing ring must be in line when bearing rings are assembled. 2 Install outer bearing ring (18), 12 new lockwashers (17), and 12 cap screws (16). Torque cap screws to 38 lb-ft (52 N·m). NOTE Some cupola race rings may have 128 white, cream, or yellow bearing balls and 128 pink or red bearing balls. Install the white, cream, or yellow bearing balls alternately with 128 pink or red bearing balls. 3 Install upper bearing ring (15) and 252 white or cream bearing balls (14). 4 Install lower bearing ring (13) and 12 cap screws (12). Torque cap screws to 35 lb-ft (47 N·m). 5 Install bearing shield (11) and 12 washer assembled screws (10). 10-5