TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
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TM 9–2350–311–20–2 Change 2 1–19 Functional group and part Number of Variations How assemblies/parts differ 06 Electrical contact segment 2 Segment ring for vehicle with 3 con- tact arm assemblies has more attach- ing hardware than segment ring on vehicles having 5 contact arm assem- blies. Also, vehicles with 3 contact arm assemblies have a segment ring cover. Vehicles with 5 contact arm as- semblies have no segment ring cover. 09 Traversing mechanism 2 M109A4/M019A5 howitzers have modified traversing mechanisms. The electric clutch has been replaced by a hydraulic clutch, the brush assembly has been eliminated, and a clutch valve replaces it. A different hand- wheel is also used. 10 Commander’s cupola 2 On earlier design vehicles, the cupola can be opened from both the inside and outside. On later design vehicles, the cupola can be opened only from the inside. Some earlier design vehi- cles allow rotation of the cupola by loosening a ring lock. On later design vehicles, the cupola can be rotated by pulling out a latch and by placing the latch into one of ten notches to fix the cupola into position. 11 Commander’s seat handle latch 2 Some early design vehicles have a short handle on the commander’s seat assembly, and some vehicles have a long handle. 12 Gunner’s escape hatch 2 On later design vehicles, the escape hatch is opened by pushing a knob and turning a handle. 17 NBC system 2 NBC system is provided only on M109A4 /M109A5 howitzers.