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technical manual operator instructions

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Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR MASK,<br />

CHEMICAL-BIOLOGICAL: M45 (con’t)<br />

ITEM<br />

NO.<br />

INTERVAL LOCATION PROCEDURE NOT FULLY MISSION<br />

CAPABLE IF:<br />

ITEM TO<br />

CHECK/<br />

SERVICE<br />

5 After External<br />

Drink Tube<br />

a. Check external drink<br />

tube (1) for cuts, cracks<br />

or holes.<br />

External drink tube is<br />

missing or has cuts,<br />

cracks or holes.<br />

b. Check external drink<br />

tube (1) for tight<br />

connection to the outlet<br />

valve housing and quick<br />

disconnect coupling (2).<br />

External drinks tube<br />

connection or quick<br />

disconnect coupling is<br />

loose.<br />

2-22

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