Thursday, July 3, 2008

 

3.15 400S THROTTLE CHECKS AND ADJUSTMENTS

General

The throttle control system on the Deutz engine includes the positional controller and the actuator. Four LEDs are incorporated in the controller. They are as follows:
• Red - failure: signals a problem with the system -
needs service or adjustment
• Green - clutch engaged; operation normal while system is powered.
• Amber - motor extend
• Amber - motor retract

The controller is designed so that when the system voltage reaches 10.5 volts, the actuator clutch will be released and the motor drive turned off in order to prevent unpredictable operation from occurring. When a failure condition occurs (i.e. position time-out) the controller will release the clutch and turn off the actuator motor. This will prevent unnecessary motor wear.

Note: Never run fuel tank dry. Diesel engines cannot be restarted after running out of fuel until fuel system has been air-vented or bled of air. See Deutz Instruction Manual for procedure.

1. Power the ignition switch at the ground control panel. Set the idle rpm.
2. Supply 12 volts of power to the white wire on the controller. Set the mid engine rpm.
3. Supply 12 volts of power to the white & green wires on the controller. Set the high engine rpm.


Note: Actuator rod travel must stop slightly before lever makes contact with throttle lever stop. Failure to do so will burn out actuator.


Controller Status
Clutch engaged no actuator movement

Clutch engaged actuator extending

Clutch engaged actuator retracting

Controller Fault - clutch disengaged and no actuator movement

Failure Modes
Immediate Red Light

Action:
1. Recycle power to determine if the problem is intermittent.
2. The input voltage must be greater than 10.5 Vdc.
3. Check wiring for any damage and correct.
4. Disconnect engine harness and actuator connnections.
5. If problem reoccurs return unit.

Green and either Amber light followed by a red light

Action:
1. Inspect and clean wiring connections.
2. Examine throttle linkage for any damage or bent components and correct.
3. With linkage disconnected, check each potentiometer for operation.
4. Reconnect linkage and reset each potentiometer for correct operation.
5. If failure continues to occur, replace unit.

Only green light on and no actuator movement

Action:
1. Adjust trim potentiometers.
2. If problem continues, replace unit.


To purchase this throttle actuator click here

This blog is designed to provide service technicians with information on the maintenance and repair of the equipment designated. This blog is no substitute for an appropriate education, skill development that comes through experience alone, safety, wise and judicious discernment, and ultimately proper performance of service procedures. You should read and understand the manuals, obey all locally approved safety practices, procedures, rules, codes, regulations and laws.
By using the blog you agree to indemnify and hold harmless GCIron.com, its officers, directors, and employees, against any and all third-party costs, claims and expenses including attorney's fees arising out of or relating to use of this site and information. GCIron.com assumes no responsibility and risk for use by any person or organization of the website and the service provided by GCIron.com

Copyright © 2008 JLG Industries -Manual 3120788

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