This illustration show you guide on how to stop Caterpillar 72H Pipelayer engine if an electrical malfunction occurs.
Cat SIS EPC
Procedures:
If the engine does not stop after turning the engine start switch key to the OFF position, perform the following procedure.
1. Turn the key to the Emergency Shutdown
Override position in the event of a Delayed Engine Shutdown (DES) or Key Off Regeneration (KOR) is active.
2. Apply the parking brake.
3. Lower the implement, if necessary.
4. Dismount the machine.
At the Ground Level Service Center, toggle the Engine Shutdown Switch upward in order to stop the engine.CAT ET 2022A
6. If the engine remains operating, locate the fuel shutoff valve. The fuel shutoff valve is under the fuel tank at the center rear of the machine.Cat adapter 3
7. Close the red handle of the fuel shutoff valve in order to shut off the fuel supply to the engine.
Note: Do not operate the machine until the malfunction has been corrected
