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. TABLE 2-1 UNIT PMCS FOR M109AZM109A3/M109A4/M109A5 HOWITZERS — CONTINUED INTERVAL Semiannual Semiannual ITEM TO BE INSPECTED Fan Gear Case — Continued PROCEDURE Remove from shroud (para 7-6 and 7-7). Clean area around plugs (9) on fan gearbox housings (10) with dry cleaning solvent. Remove plug. Check that oil level is up to bottom of plug hole. If not, remove breather (11) and add 0-156 unit oil level reaches bottom of hole. Clean and install plug. Clean breather with dry cleaning solvent before installing. Fire Extinguisher System Cylinders must not be dropped, struck or subject to any temperature above 140°F (60°C). An explosion may result causing severe injury or death. a. Remove and weigh cylinders. Cylinders are to be recharged to “FULL” weight stamped on cylinder if difference between the “FULL” and “CURRENT" (after weighing) weight exceeds 1 lb (0.45 kg). b. Before replacing cylinder, operate the discharge handles (12) to ensure cables do not bind. Replace antipilferage seal (13) and wire (14) on control valve (15). Driver's and outside handles require antipilferage seal and wire (para 11-25). c. Check distribution lines for loose fittings, loose mounting, and cracks. NOT FULLY MISSION CAPABLE IF: a. Any cylinders require recharging. b. Any binding or unserviceable cables and discharge handles. c. Distribution lines loose, cracked, or not mounted tightly. 2-28 WARNING