MALFUNCTION/SYMPTOM INDEX -820360128

TM 9-1240-375-34&P

0029 00

MALFUNCTION/SYMPTOM INDEX - Continued

Work Package

Malfunction/Symptom

COUNTER BOX ASSEMBLY

1. Azimuth counter cover does not remain open or closed (M137)..................................

2. Azimuth counter cover does not remain open or closed (M137A2/M137A3) ..............

3. Counter box windows are fogged or have condensation (M137) .................................

4. Counter box windows are fogged or have condensation (M137A2/M137A3) .............

5. Counter dials have uneven or no illumination (M137)................................................

6. Counter dials have no illumination (M137A2/M137A3)..............................................

COVER ASSEMBLY (HEAD)

1. Cover plate does not latch correctly ..............................................................................

ELBOW ASSEMBLY

1. Elbow assembly does not latch correctly ......................................................................

HEAD ASSEMBLY

1. Head assembly elevation knob binds ............................................................................

KNOB ASSEMBLY (AZIMUTH)

1. Azimuth knob does not function properly ....................................................................

OPTICAL ELEMENTS

1. Internal optics are fogged or have condensation..........................................................

2. Reticle and image have parallax ...................................................................................

3. Reticle does not illuminate (M137A2/M137A3) ...........................................................

4. Reticle does not illuminate or has uneven illumination (M137).................................

END OF WORK PACKAGE

0029 00-2