TM-9-1240-400-34-P

TELESCOPE; PANORAMIC: M115, ELBOW: M139, MOUNT: M138 AND M137

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL

OCTOBER 1993

TM-9-1240-400-34-P - Page 207 of 344

TM 9-1240-400-34&P

SETTING UP AND ADJUSTING CROSS-LEVELING FIXTURE

1

Secure cross-leveling fixture (1) on a solid stand

bolted to the floor.

2

Place precision level (2) on square shaft (3),

perpendicular to axis of rotation, and center bubble.

3

Place precision level (2) on square shaft (3), parallel

to axis of rotation.

4

Set cant vernier scale (4) and elevation vernier scale

(5) to "0".

5

Install test fixture adapter (6) on cross-leveling shaft

end (7).

Make sure adapter keys (8) are parallel to

top of square shaft (3) within 0.1 mil.

6

Tighten setscrew (9) lightly.

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