Sign up to sell your inventory with NSN Lookup

TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download

Page 245 of 775

TM 9--2350--311--10 Change 6 2--147 2--11 OPERATION OF FIRE CONTROL EQUIPMENT UNDER NORMAL CONDITIONS — CONTINUED 2--11.2 M118A2/M118A3 Elbow Telescope and M146 Telescope Mount — Continued d. Quick Alinement of M118A2/M118A3 Elbow Telescope Using the M140/M140A1 Alinement Device WARNING The M140 alinement device is radioactively illuminated. Check for loss of luminescence, breakage, damage, or defects. If present, follow the procedures on pages b and c. NOTE • To assure the M140/M140A1 alinement device is in collimation and can be used for quick alinement procedure, the fire control instruments must first be boresighted using either distant aiming point method or test target method (para 2--12.2). Paragraph 2--12.2 also provides procedures for checking the M140/M140A1 alinement device while boresighting on the test target. • M140/M140A1 alinement device is used to aline M118A2/M118A3 elbow telescope with cannon tube. 1 Gunner removes M140/M140A1 alinement device (23) from stowage and hands it to driver.