TM 1-1730-232-13&P
CAUTION
To ensure even lifting and prevent damaging torque to helicopter skids, both Ground
Handling Wheels Assemblies should be operated at the same time by two ground
operators.
1.
Turn the hydraulic release valve knobs clockwise to a closed (seated) position on each wheels assembly
2.
Simultaneously work the pump handles up and down to build hydraulic pressure.
3.
Continue pumping the handles until the hydraulic rams start to rotate the eccentric axles.
4.
Constantly check that the movement of both skids is even as they are lifted.
5.
Continue lifting the helicopter until the skids are off the ground an equal amount.
2-13. LOWERING THE HELICOPTER.
The Ground Handling Wheels Assembly is used to lower the helicopter as follows'
WARNING
Ensure that no personnel or obstructions are under helicopter skids prior to lowering.
Do not attempt to use the pressure release knob to control descent of the helicopter.
This may prevent the metering valve from activating and could cause damage to the
helicopter and/or injury to personnel.
CAUTION
To ensure even lowering and prevent damaging torque to helicopter skids, both Ground
Handling Wheels Assemblies should be operated at the same time by two ground
operators.
1.
Clear non-essential personnel from the area and announce that the helicopter is to be lowered.
2.
Using two operators, simultaneously and rapidly turn the control valve release knobs counter clockwise.
3.
Verify that both skids are firmly resting on the ground.
4.
If descent of skids was not equal, there may be a defective metering valve installed In one of the wheels
assemblies. Troubleshoot in accordance with procedures in Chapter 3, Section III.
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