TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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TM 9-1240-401-34&P 4-24. M145/M145A1 TELESCOPE MOUNT FINAL INSPECTION AND ADJUSTMENT - continued c. MOUNTING M145/M145A1 TELESCOPE MOUNT ON CROSS-LEVELING FIXTURE 1 Install M145/M145A1 telescope mount (1) on fix- ture adapter (2) and with keyway properly posi- tioned, secure with four mounting bolts. 2 Apply a 24 VDC power source to M145/M145A1 telescope mount (1) and illuminate vials and count- ers by turning toggle switch (3) to ON position. 3 Using M1A1 gunner’s quadrant on mounting sur- face (4), level the fixture adapter (2). 4 Set fixture adapter (2) elevation indicator ring to "0". 5 Set elevation counter (5) and correction counter (6) to “0”. 6 Install linkage assembly (8) on shaft of M145/ M145A1 mount and fixture adapter (2). Manually center the disk assembly level (7) bubble. Secure in a level position. 7 Set elevation counter (5) to 50 roils depression. 8 Operate elevation handwheel (9) on the cross-lev- eling fixture (10) to center the disk assembly level (7) bubble. 9 Set elevation counter (5) to 1333 mils. 10 Repeat step 8. 4-52