TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P I 3-30. M118A2/M118A3 ELBOW TELESCOPE LEVEL ASSEMBLY LEAKAGE TEST - continued 13 14 15 16 17 Remove level assembly (6) and fabricated leak test adapter (7) from the container of clear water. Release pressure from fabricated leak test adapter (7) at inlet port (11). Remove four wing nuts (9), four machine screws (8), and level assembly (6) from fabricated leak test adapter (7). If air bubbles were detected, repair level assembly (ref. para 3-18 for Ml 18A3; para 3-19 for M118A2) and repeat the level assembly leakage test. If air bubbles were not detected, use a clean, dry wiping rag to dry level assembly. 3-31. M118A2 ELBOW TELESCOPE COVER ASSEMBLY LEAKAGE TEST I ITIAL SET-UP Tools and Special Tools ate rials/Pa rts Nitrogen, technical (Item 8, appx B) Adapter, leak test, fabricated (fig. C-1 appx Wiping rag (Item 12, appx B) c) ment Condition Purging kit (Item 22, appx F) Ml 18A2/M1 18A3 elbow telescope removed from howitzer (TM 9-2350-311-10) Tool Kit, Electronic System, Repair, Field Maintenance (SC5180-95-CL-B29) Cover assembly removed, 5180–01-168-0487 M118A2 (ref. para 3-17) 1 Secure pressure regulator(1) to a tank containing pressurized nitrogen. If registered pressure is 100 psi (689.48 kPa) or less, obtain a replacement. 2 Open nitrogen tank valve (2) and observe pressure gage (3). Gage should indicate pressure in nitro- gen tank. 3-54