S 212-003-N00
(2)
Make sure the pressure hose A or B is connected to the pressure adapter of the actuator.
S 412-004-N00
(3)
Install a No. 6 plug to the end of the hose that is not being used.
S 412-005-N00
(4)
Tighten the plug with a wrench.
NOTE:____Do not use aluminum or plastic dust covers. Make sure you use fittings that will seal the hose when you put pressure to the hose.
B. Service the pump reservoir.
S 212-006-N00
(1)
Examine the sightglass on the side of the pump reservoir.
S 612-007-N00
(2)
If you can not see the fluid level, service the pump as follows:
(a)
Remove the fill cap.
(b)
Add clean filtered Calibrating Fluid (P03-003) until full.
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747-400
MAINTENANCE MANUAL
HYDRAULIC FLOW CONTROL
HYDRAULIC VALVE
PRESSURE
RETURN HOSE
AIR SUPPLY CONNECTOR
L-B5317 (0697) PW V
Hydraulic Pump (Pnuematic Motor Driven) Figure 201
K04139
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C.
D.
E.
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747-400 MAINTENANCE MANUAL
(c) Install the fill cap.Before you connect an air supply to the pump, do a check of the controls and valves.
S 862-008-N00
(1) Turn the Air Supply Valve to CLOSED (perpendicular to flow).
(2) S 862-009-N00Lift and turn the Hydraulic Pressure Adjustment Knob counterclockwise towards OFF (MINUS) to stop.
(3) S 862-010-N00Move the Hydraulic Flow Control Valve to NEUTRAL (middle position).
Supply air to hydraulic pump.
S 862-043-N00
(1) Connect an air supply hose to the pump air supply connector.Operate the pump to supply hydraulic pressure to the applicable actuator.
S 862-044-N00
WARNING: MAKE SURE ALL PERSONS AND TOOLS ARE AWAY FROM THE MECHANICAL
_______ PARTS OF THE SYSTEM THAT YOU ARE ADJUSTING. WHEN YOU START THE PUMP, THE ACTUATOR CAN MOVE. IF YOU DO NOT DO THIS, YOU CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Turn the Air Supply Valve to OPEN (parallel to flow).
NOTE: The air flow out of the air vent will stop when the
____ valve is full open. Do not install a plug to the vent hole.
S 862-012-N00
(2)
Lift and turn the Hydraulic Pressure Adjustment Knob towards ON (PLUS) only until the correct pressure is on the larger hydraulic pressure gage.
S 782-013-N00
(3)
See the adjustment procedure for the correct pressure.
S 862-014-N00
(4)
Move the Hydraulic Flow Control Valve to pressurize the hose that is connected to the actuator.
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747-400 MAINTENANCE MANUAL
S 862-015-N00
(5)
Lift and turn the Hydraulic Pressure Adjustment Knob as necessary to keep the correct pressure during the adjustment.
F.
Extend and retract the actuator.
S 862-045-N00
(1) Use the applicable Electrical Control Box to extend and retract the actuator.
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