TROUBLESHOOTING PROCEDURES OPTICAL ELEMENTS

TM 9-1240-375-34&P

0040 00

GENERAL SUPPORT

M137/M137A2/M137A3 PANORAMIC TELESCOPE

(1240-01-038-0531/1240-01-483-6103/1240-01-483-6100)

TROUBLESHOOTING PROCEDURES

OPTICAL ELEMENTS

INITIAL SETUP:

References

WP 0092 00

OPTICAL ELEMENTS

Table 1. Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. INTERNAL OPTICS ARE

1. Inspect seal between head

1. Replace defective seal (WP

FOGGED OR HAVE

assembly and body assembly.

2. Replace defective seal (WP

2. Inspect seal between body

assembly and elbow assembly.

3. Inspect seal in head assembly

3. Replace defective seal (WP

between cover assembly and

window.

END OF WORK PACKAGE

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