MEA INC
2600 American Lane | Elk Grove Village, IL 60007 | USA
T +1 847 766 9040 | F +1 847 350 1951
COMPLETE CONTROL
www.meaincorporated.com
MEA Incorporated | Hawk Actuator Instruction and Operation Manual
02/2018
30
When properly filled with hydraulic fluid the level indicator will extend approximately 1”. When the
hydraulic fluid level is low, the level indicator will retract. To correctly check the hydraulic fluid level it is
important to monitor the level indicator for the entire actuator stroke, in both directions of travel.
Follow the Hydraulic Power Source (HPS) & Actuator Fluid Fill Procedure to ensure the actuator is properly
filled with hydraulic fluid and purged of air.
5-5 Hydraulic Power Source (HPS) & Actuator Fluid Fill Procedure
1) If an accumulator system is present, close the shutoff ball valves located upstream of the
accumulator and reservoir.
2) Remove the cover from the red Hydraulic Power Source (HPS) enclosure and locate the Schrader-
style hydraulic fluid fill valve.
3) Remove the cap from the fill valve and connect an oil fill gun to the Schrader valve.
4) Fill with hydraulic fluid until the fluid level indicator is fully extended. It may take 2-3 pumps of
the fill gun before the indicator begins moving.
5) Locate the fluid relief valve directly above the Schrader valve. Using a small, flat head screwdriver
briefly lift the relief valve to let any trapped air exhaust. Trapped air may quickly exhaust or could
present itself as foaming hydraulic oil.
6) Re-check fluid level indicator and add hydraulic fluid until it again moves to the fully extended
position.
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