KIT-GASKET 2399897 - Caterpillar

General
The following troubleshooting guide is an aid in isolating trouble to the control box, actuator, plant wiring, or elsewhere. Troubleshooting beyond this level is recommended ONLY when a complete facility for control testing is available.
The control can be damaged with the wrong voltage. When replacing a control, check the power supply, battery, etc., for the correct voltage.
Troubleshooting Procedure
This chapter is a general guide for isolating system problems. Before using this procedure, make sure that the system wiring, soldering connections, switch and relay contacts, and input and output connections are correct and in good working order. Make the checks in the order indicated. Each system check assumes that the prior checks have been properly done.Control Test and Calibration
General
Do the following checks on the 721 control. Then verify the functioning of set points and adjustments.1. Connect the Hand Held Programmer to the control in accordance with the instructions in Chapter 4. Verify that correct voltage and polarity are applied to the control. Verify that the programmer does its power-up tests. Failure to do the power up test indicates either the control or Hand Held Programmer has failed. If so, try this step with another Hand Held Programmer. If the test still fails, replace the 721 control. If the test passes with the second Hand Held Programmer, replace the Hand Held Programmer.2. Press the "ID" key. The message "721 Speed Control P/N 5412-505/506" should appear. Failure indicates either the control or Hand Held Programmer has failed. If so, try this step with another Hand Held Programmer. If the test still fails, replace the 721 control. If the test passes with the second Hand Held Programmer, replace the Hand Held Programmer.3. Select Menu 0. Step through the menu to the Diagnostics Result step. Verify that the displayed value is 49. If any other value is displayed, replace the control.4. Select Menu 1. Verify that all set points are as recorded during installation. Repeat for the other menus. If any differences are found, change the set point(s) to the correct value. Press the "SAVE" key. The message "Set Points Saved" should be displayed. Remove power from the control for at least 10 seconds. Verify correct values were retained during power down. Failure indicates the control has failed and should be replaced.Discrete Inputs
Do the following test to verify the function of the discrete inputs. Do NOT do these tests with the engine running.1. Close the Minimum Fuel (Run/Stop) contact. Select Run/Stop Contact Status on Menu 0. The status should be closed. If the value does not change from closed to open when the contact is opened, verify the voltage at the control terminals. If correct voltage is verified, the control has failed and should be replaced.2. Close the Idle/Rated contact. The Idle/Rated Contact Status in Menu 0 should be closed. If the value does not change from closed to open when the contact is opened, verify the voltage at the control terminals. If correct voltage is verified, the control has failed and should be