RING-BACKUP 0951786 - Caterpillar

The C9 engine is an in-line six cylinder engine. The engine has a firing order of "1-5-3-6-2-4". The engine's rotation is counterclockwise when the engine is viewed from the flywheel end of the engine. The engine utilizes a turbocharger. The engine has a bore of 112 mm (4.41 inch) and a stroke of 149 mm (5.87 inch). The displacement is 8.8 L (537 cu in).The C9 Engine uses the hydraulic electronic unit injector (HEUI) for fuel injection. The HEUI eliminates many of the mechanical components that are used in a pump-and-line system. The HEUI provides increased control of the timing and increased control of the fuel air mixture. The timing advance is achieved by precise control of the unit injector timing. Engine rpm is controlled by adjusting the injection duration. A special pulse wheel provides information to the Engine Control Module (ECM) for detection of cylinder position and engine rpm.The engine has built-in diagnostics in order to ensure that all of the components are operating properly. In the event of a system component failure, the operator will be alerted to the condition via the check engine light that is located on the dashboard. Caterpillar Electronic Technician (ET) can be used to read the numerical code of the faulty component or condition. Also, the cruise control switches can be used to flash the code on the check engine light. Intermittent faults are logged and stored in memory.Starting The Engine
The engine's ECM will automatically provide the correct amount of fuel in order to start the engine. Do not hold the throttle down while the engine is cranking. If the engine fails to start in twenty seconds, release the starting switch. Allow the starting motor to cool for two minutes before you use the starting motor again.
The optional automatic ether injection system is the only starting fluid system that is recommended. Excessive starting fluid can cause piston and ring damage. Use starting fluid for cold starting purposes only.
Cold Weather Starting
Starting the engine and operation in cold weather is dependent on the type of fuel that is used, the oil viscosity, and other optional starting aids. For more information, refer to the Operation and Maintenance Manual, "Cold Weather Operation" topic (Operation Section).