Do the troubleshooting procedure to find the cause of the malfunction.

Probe the tube to find the blockage.

Using the prescribed oil, replenish the oil tank.

If the valve opening is premature, stop the test.

Isolate the defective portion of the circuit.

Put the antenna through the top of the slots.

Do not install shims over 0.02 mm thick.

Make sure that drag struts do not obstruct landing gear.

Damage can occur to the pump if there is not sufficient oil in the reservoir.

Do not make kinks in the cables.

Align the drill until it is perpendicular to the surface.