GUARD GP-SWIVEL 1348879 - Caterpillar

Illustration 1 g00894806
Typical exampleTest Step 1. Inspecting Electrical Connectors
Turn the engine control to the OFF position.
Thoroughly inspect the ECM connectors J1/P1 and J2/P2. Inspect all of the other connectors. Refer to the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors" for details.
Perform a 45 N (10 lb) pull test on each of the wires in the ECM connector that are associated with the circuit.
Check the ECM connector (allen head screw) for the proper torque of 6.0 N m (55 lb in).
Check the customer connector (allen head screw) for the proper torque of 2.25 0.25 N m (20 2 lb in).
Check the harness and the wiring for abrasion and pinch points.Expected Result:The components and wiring should be free of the following problems: damage, corrosion, abrasion and incorrect attachment.Results:
OK - The wiring and connectors are okay. Proceed to test step 2.
Not OK - The wiring and/or connectors need repair.Repair: Repair the connectors or wiring and/or replace the connectors or wiring.STOPTest Step 2. Check the Voltage at the Speed Control.
Turn the engine control to the ON position.
Connect the red probe of the digital multimeter to the + Battery terminal of the Speed Control. Connect the black probe of the digital multimeter to the − Battery terminal of the Speed Control.Expected Result:The digital multimeter should read 24 5 VDC.Results:
OK - The voltage supply to the Speed Control is correct. Proceed to test step 3.
Not OK - The digital multimeter did not read 24 5 VDC.Repair: There is a problem with the supply voltage to the Speed Control.STOPTest Step 3. Check the Throttle Position on the Caterpillar Electronic Technician (ET).
Observe the position of the throttle on the Cat ET.
Turn the Speed Adjust Potentiometer to the lowest setting.
Start at the low idle position. Slowly turn the Speed Adjust Potentiometer in the other direction. Monitor the position of the throttle on the Cat ET.Expected Result:The Throttle Position on the Cat ET should read 0 percent at the lowest setting and 0 to 100 percent as the Speed Adjust Potentiometer is adjusted.Results:
OK - The Speed Control is operating correctly.Repair: There may be an intermittent problem. If the problem is intermittent perform the diagnostic functional test Troubleshooting, "Inspecting Electrical Connectors".STOP
Not OK - The Throttle Position on Cat ET does not change correctly. Proceed to test step 4.Test Step 4. Check the Speed Control.
Remove the wire from the S terminal at the Speed Control.
Set the multimeter to "VDC". Press the "Hz" button twice so that the % symbol is displayed.
Place one probe of the multimeter on the S terminal of the Speed Control. Place the other probe on the − Battery terminal of the Speed Control.
Monitor the output of the percent duty cycle from the Speed Control on the multimeter. Turn the potentiometer from the low setting to the high setting.Note: The throttle position on the Cat ET will NOT match the percent duty cycle on the multimeter.Expected Result:The Duty Cycle should be between 4 and 10 percent at the low setting and between 90 and