Commander III
2-6
manual control button on either end of the proportional
solenoid valve. The cable connectors for each
solenoid coil are labeled to indicate up, down, left and
right.
Note: The Auto-Manual mode on the control loop
of the system being checked should be in the
manual mode.
002-3477
Manual Override Control Buttons: Used to manually
operate the auxiliary lift systems and determine if the
fault is electrical or hydraulic. The valves are located
under the operator control console. Press the manual
control button on either end of the solenoid valve
using a small screw driver. The corresponding system
should respond by extending or retracting a cylinder or
operating a drive motor.
002-3478
Proportional control valve manual override levers:
Used for diagnosing the trimmer, track, auger and
conveyor systems to determine if the fault is electrical
or hydraulic. By moving the manual control lever
forward on each valve, the corresponding system
should respond in the reverse direction and should
respond in the forward direction when moved to the
rear.
Note: Some levers may be removed to prevent
obstructions from interfering with valve operation.
133-0121
Pressure Relief Valves: Used to adjust the maximum
pressure settings of the trimmer, track, auger and
conveyor systems. If any of the systems should
stall, the pressure relief valve for that system will
open, bypassing hydraulic uid to the pressure tank.
If one of the valves should open, it will in no way
affect the operation of the other valves. Refer to the
Maintenance Chapter for adjustment instructions.
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