TM 3-4240-334-20&P
TM 3-4240-334-20&P
TM 3-4240-334-20&P
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<strong>TM</strong> 3-<strong>4240</strong>-<strong>334</strong>-20&P<br />
l. SETSCREW ADJUS<strong>TM</strong>ENT AND REPLACEMENT.<br />
INITIAL SETUP<br />
Tools<br />
Tool Kit, Electronic Equipment TK<br />
105G (Item 1, App B, Sect. III)<br />
REMOVAL<br />
CAUTION<br />
When performing maintenance on the facepiece, do not scratch the plastic<br />
lenses.<br />
Keep work area clean. Dirt in or on items could prevent airtight integrity.<br />
NOTE<br />
These procedures apply to the removal, installation, and adjustment of both inlet<br />
valve setscrews.<br />
Unscrew setscrew (1) from lever (2).<br />
INSTALLATION<br />
NOTE<br />
Do not use thread glue. A nylon locking device is built into the setscrew.<br />
1. Screw Setscrew (1) into lever (2).<br />
NOTE<br />
Proper adjustment of setscrew permits easy adjustment of levers.<br />
2. Turn screw into tighten or out to loosen setscrew as necessary.<br />
2-59
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