MALFUNCTION/SYMPTOM INDEX -820360096

TM 9-1240-375-34&P

0018 00

MALFUNCTION/SYMPTOM INDEX - Continued

Work Package

Malfunction/Symptom

BEARING HOUSING ASSEMBLY

1. Bubble in cross level vial or bubble in elevation level

vial does not center within one graduation line (M171)..............................................

2. Bubble in cross level vial or bubble in elevation level

vial does not center within one graduation line (M171A1) .........................................

3. Cross level vial or elevation level vial has no illumination (M171A1) .......................

4. Cross level vial or elevation level vial has uneven or no illumination (M171) ..........

5. Cross level vial or elevation level vial is cracked or broken (M171A1) ......................

6. Cross level vial or elevation level vial is cracked or bubble is elongated

but still illuminated (M171) ..........................................................................................

7. Cross level vial or elevation level vial is cracked or bubble is elongated

and not illuminated (M171)...........................................................................................

8. M17/M17A1 quadrant does not mount correctly (M171) ............................................

9. M17/M17A1 quadrant does not mount correctly (M171A1) ........................................

10. Plunger assembly binds (M171) ....................................................................................

11. Plunger assembly binds (M171A1) ...............................................................................

HOUSING ASSEMBLY

1. Elevation control is erratic and rough during movement ...........................................

2. Elevation knob exceeds 1.5-mil backlash .....................................................................

3. Elevation knob requires torque in excess of 12.00 in.-lb (1.36 N-m) to rotate...........

OPTICAL INSTRUMENT ROCKER ASSEMBLY

1. Cross level control is erratic and rough during movement .........................................

2. Cross level knob exceeds 1.5-mil backlash ...................................................................

3. Cross level knob requires torque in excess of 12.00 in.-lb (1.36 N-m) to rotate.........

END OF WORK PACKAGE

0018 00-2