TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 91 of 828
TM 9–2350–311–20–2 2–30 Change 2 Table 2-2. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF- PROPELLED HOWITZER – CONTINUED Location Item No. Not Fully Mission Capable if: Procedure Item to Check/Service Interval 13 Annually Recuperator Cover Gasket and High Pressure Nitrogen Check NOTE Loosen cap screws to stop before rotating cover to open position. a. Inspect gasket for serviceability. b. Replace if unserviceable (para 19–2). GASKET SCREW SCREW COVER c. Verify high pressure nitrogen 700 ± 25 psi (4827 ± 172 kPa) (para 19–2). 14 Annually Scribe Lines on M15 Quadrant Verify correctness of scribe lines (TM 9–2350–311–10). 15 Annually NBC Equipment (M109A4/M109A5 Howitzers Only) WARNING After suspected NBC exposure of ve- hicle, all air filter elements in M2A2 air purifier shall be handled by personnel wearing NBC protective equipment. Death or bodily injury can result from not wearing NBC protective equip- ment. NOTE For general guidance on replacement of filters, refer to para 17–3: