TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
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TM 9-2350-311-20-1 2-15 PROCEDURES FOR SEMIANNUAL/ANNUAL SERVICES — CONTINUED ITEM NO. 19 20 2-34 TABLE 2-1 UNIT PMCS FOR M109A2/M109A3/M109A4/M109A5 HOWITZERS — CONTINUED INTERVAL Annual Annual ITEM TO BE INSPECTED Cooling System, Radiator Hoses, and Pumps — Continued Coolant PROCEDURE (2) Open hull drains. (3) Cover all exposed openings of engine. Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with effective chip guarding and personal protective equipment (goggles/shield, gloves, etc). (4) Connect tool to air supply and insert liquid supply hose into container of cleaning solution. (5) Insert tool through shroud cover opening and wet front and back of radiator with cleaning solution. Soak for approximately 10 minutes. (6) Remove heavy deposits from face of radiator by brushing with medium stiff brush that will not damage radiator fins. (7) Blast radiator with air/solution mixture, holding head of tool approximately 0.5 in. (13 mm) from face of radiator. Alternate from back to front until cleaning solution flows smoothly through radiator. (8) Drain container and fill with clean water. Flush engine parts and radiator completely. Remove liquid supply hose from container and use air to complete operation. (9) Uncover engine openings and install radiator shroud cover with eight screws. Close hull drains. Test radiator coolant for proper protection (TB 750-651). NOT FULLY MISSION CAPABLE IF: Does not pass alkalinity test in TB 750-651. Not protected to -20°F (-30°C). WARNING