DRAFT
TM 5-4210-249-13&P-2
0188
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TFFT03749
2.
Remove plug (6) from junction box cover (7).
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TFFT03750
NOTE
Vertical speed control is adjusted by using screwdriver and turning needle valve clockwise
or counterclockwise in increments of 1/8 of a turn.
To increase vertical speed, turn needle valve counterclockwise in increments of 1/8 of a
turn.
To decrease vertical speed, turn needle valve clockwise in increments of 1/8 of a turn.
Maintain air pressure in normal operating range (85 to 120 psi [586 to 827 kPa]) to ensure
accurate adjustment.
3.
Using a small screwdriver, adjust needle valve (8).
0188-2
