TM 9-4120-403-14
Inspection
Check that glass window is clean and not cracked or broken. Clean if dirty. Replace liquid sight indicator if cracked or
broken.
Test
Check for evidence of leakage. Leak test per paragraph 5-10 if leak is suspected. Repair or replace as indicated.
Figure 5-20. Liquid Sight Indicator (Sight Glass)(S)
5-68
