TM 5-3810-307-24-2-2
Chatter Test
The chatter test indicates the ability of the needle
valve to move freely and correctly atomize the fuel.
You should hear the valve open and should see a
well atomized spray pattern.
Used nozzles should not be evaluated for chatter at
lower speeds. A used nozzle can generally be used if
it passes the leakage test, chatters audibly at high
lever speeds and uniformly atomizes the fuel.
Fuel Transfer Pump - Piston Style
Rebuild
Preparatory Step:
Clean debris from the fuel line fittings and
the fuel transfer pump.
20 mm, 26 mm Wrench
CAUTION
The hand-prime fitting and inlet fitting are
spring loaded. Sudden removal of these two
fittings can cause personal injury.
Secure the pump in a vise, taking care not to damage
the pump housing.
Remove the rubber boot from the hand-prime fitting.
Remove the three illustrated fittings.
