TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P e. Installation 1 If two headless straight pins (7) were removed, redrill using No. 32 (0.116) drill. Drill into housing 7/8 inch (22.23 mm) deep; ream for drive fit in outer sleeve (22) and slip fit in worm shaft assem- bly (3). 2 Install three new shims (4,5, and 6) as required to obtain minimum backlash. Apply grease (item 6, appx B) to teeth of worm shaft assembly (3) and position over two headless straight pins (7). Secure with three new Iockwashers (2) and three cap screws (1). 3-16. COVER ASSEMBLY MAINTENANCE INSTRUCTIONS (M118A3) This task covers: a. Removal b. Disassembly c. Repair d. Assembly e. Installation INITIAL SET-UP Tools Sealing Compound (Item 13, appx B) Shim (Item 49, appx E) Tool Kit, Electronic System, Repair, Field Mainte- nance (SC5180-95-CL-B29) References 5180-01-168-0487 TM 9-254 TM 750-116 Equipment Condition I Adhesive (Item 1, appx B) Lockwashers (4) (Item 68, appx E) M118A3 elbow telescope removal from howitzer Preformed packing (Item 42, appx E) (TM 9-2350-311-10) a. Removal Remove cover assembly (1) from housing (2) by remov- ing four machine screws (3) and four Iockwashers (4). Discard lockwashers. 3-19