TM-9-1240-400-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-400-34&P Section IV. DIRECT SUPPORT MAINTENANCE 4-7. MAINTENANCE OF M138 TELESCOPE MOUNT This task covers: a. Disassembly c. Repair b. Cleaning d. Reassembly INITIAL SETUP: General Safety Instructions Tools and Special Tools Tool kit, electronic: system maintenance (SC 5180-95-CL-B29) Adjustable spanner wrench (7597708) Torque converter (figure 6, appx D) Materials/Parts Aircraft grease (item 8, appx C) Sealing compound (item 10, appx C) Self-locking screw (NAS1352-3LL8P) References TM 9-254 Equipment Conditions M138 telescope mount removed from M110 A2 howitzer (TM 9-2350-30420-2) DISASSEMBLY 1 Remove pin (1) from manual control lever (2). NOTE Detent plunger is spring-loaded. 2 Remove manual control lever (2), detent plunger (3), spring (4), and retaining ring (5). 3 Remove setscrew (6) using adjustable spanner wrench. Remove externally threaded ring (7) from adapter (8). 4-6 Use adhesives, cleaning solvents, and sealing compounds in well ventilated area away from open flame. Adhesives, cleaning solvents, and sealing compounds are harmful to skin and clothing, can burn easily, and may give off harmful vapor