- Motor overload. Check that the control valve handles are in the neutral position.
The automatic control system is designed to protect the equipment from damage. DO NOT
ATTEMPT TO BYPASS OR DISABLE THESE CONTROLS.
Check the pump rotation. See the warning in Section 6.2.
Check the charge pump pressure on the hydraulic power package. A minimum pressure of 250 psi is required
for proper stroke control and make-up flow for the winch circuit.
If this is the initial start-up, or if the system has not been operated for a period of several days, allow the pumps
to run with the valves in the neutral position for approximately five minutes. This will allow the oil to circulate at
low pressure and remove entrapped air, etc.
Check the bias setting for the piston pump stroke control. With the joystick in the neutral position, compare the
readings of the two gauges on the hydraulic power package indicating the pressures in the two sides of the winch
circuit. If the two readings differ, the bias can be zeroed by adjusting the socket-head screw on the end of the
stroke control on the piston pump; this will assure that the pump is fully destroyed when the joystick is in the
Check for oil leaks and tighten fittings as necessary.