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TM 9-4120-389-14
5-16. LIQUID SIGHT INDICATOR (SIGHT GLASS)
Preliminary procedures: Remove top cover (See para. 4-14).
a.
Inspection
(1)
Check that glass window is clean and not cracked or broken. Clean if dirty. Replace liquid
sight indicator if cracked or broken.
(2)
Check for evidence of leakage. Leak test per para. 5-6 if leak is suspected. Replace liquid
sight indicator if leak is detected.
Figure 5-13. Liquid Sight Indicator (Sight Glass)
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