TM 1-8415-215-12&P
Table 3-2. AVUM Maintenance Troubleshooting Chart
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. VISOR CANNOT BE RAISED OR LOWERED.
Step 1. Inspect for defective visor lock.
Replace visor lock per paragraph 3-12.
Step 2. Check for improperly installed visor lock.
Make certain lockstem on outer visor lock has been rotated 90.
Step 3. Inspect for defective visor.
Replace visor per paragraph 3-12.
Step 4. Inspect for missing or defective spacer(s).
Replace spacer(s) per paragraph 3-12.
Step 5. Inspect for defective visor tracks.
Replace visor tracks per paragraph 3-12.
Step 6. Inspect for defective visor housing.
Replace visor housing per paragraph 3-12.
2. UNABLE TO ADJUST EAR CUP COMPRESSION.
Step 1. Inspect for worn or defective tension cross straps.
Replace per paragraph 3-17.
Step 2. Ear cup spacers are required or are defective.
Replace per paragraph 3-17.
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