TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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TM 9-2350-311-10 Item No. 19 Interval Before Table 2–1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER — CONTINUED Location Item to Check/ Service Traversing Mechanism Crewmember Procedure GUNNER a. Check to ensure mounting hardware (1) is not missing or loose. b. Manual Traverse Check: 1. 2. Place turret lock assembly (2) in UN- LOCKED position. Place TRAVERSE CON- TROL switch (3) on gunner’s selector switch box assembly (4) in the MANUAL position. Crank handwheel assembly (5) clockwise and counterclockwise to be sure cab tra- verses freely and smoothly. c. Power Traverse Check: Ensure turret lock assembly (2) is in UN- LOCKED position. Turn vehicle MASTER switch (not shown) and CAB POWER switch (6) to ON position. Place TRAVERSE CON- TROL switch (3) on gunner’s selector box assembly (4) in POWER position. Turn gun- ner’s control assembly handle (7) to the left to check counterclockwise traversing and to the right to check clockwise traversing. If M109A4/M109A5 cab does not power tra- verse, pull up on override lever on clutch valve (8) and power traverse. NOTE Cover plate removed for clarity. Not Fully Mission Capable If: Mounting hard- ware (1) is loose, missing or bro- ken. Neither traverse method works. 2-35