M13 Series GPFU Airflow Test. (cont)

TM 3-6680-316-10

(cont)

M13 Series GPFU Airflow Test.

2-7

NOTE

Not all precleaners have adjustable

airflow regulators.

k. Look in center slots (11) of precleaned for

an airflow regulator. If you see an airflow regula-

tor, go to step l. If there is no airflow regulator,

go to step o.

Insert narrow, flat-tip screwdriver (12)

through slot (11) and into adjustment mech-

anism.

To fully open airflow regulator, turn

screwdriver counterclockwise until you feel

NOTE

resistance or hear clicks.

If you don't feel resistance or

hear clicks after two full turns,

Notify

airflow regulator is bad.

maintenance personnel after test.

2-44