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| Illustration 1 | g00848952 |
(1) Fuel priming pump (2) Separate circuit aftercooler (3) Heat exchanger (4) Heat exchanger filler cap (5) Turbocharger (6) Crankcase breather (7) Air filter (8) Engine oil filler (9) Auxiliary water pump (10) ECM (11) Fuel filter (12) Oil drain plug | |
The engines are in-line six cylinder arrangements. The engine has a bore of 130.0 mm (5.12 inch) and a stroke of 150.0 mm (5.91 inch). The displacement is 12 L (732 in3). The engine has a firing order sequence:1, 5, 3, 6, 2 and 4. The rotation of these engines is counterclockwise when the engine is viewed from the flywheel end of the engine. These engines utilize a turbocharger and an jacket water aftercooler.
The engine incorporates several major improvements. These components include an improved electronic control system. The new features lower the smoke level for emissions under all operating conditions.
The Electronic Unit Injector system eliminates many of the mechanical components that are traditionally used in the fuel injector assembly. The Electronic Unit Injector (EUI) also provides increased control of the timing and the fuel air mixture. The timing advance is achieved by precise control of the fuel injection timing. Engine rpm is controlled by adjusting the injection duration.
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 by a warning lamp or a diagnostic lamp. The check engine light is located in the pilot house. An electronic service tool can be used to read the numerical code of the faulty component or condition. 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 advance the throttle downward while the engine is cranking. If the engine fails to start in 30 seconds, release the starting switch. Allow the starting motor to cool for two minutes before using the starting motor again.
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Excessive ether (starting fluid) can cause piston and ring damage. Use ether for cold weather starting purposes only. |
Cold Mode Operation
The ECM will set the cold start strategy when the coolant temperature is below 18 °C (64 °F).
When the cold start strategy is activated, low idle rpm will be increased to 1000 rpm and the engine's power will be limited.
Cold mode operation will be deactivated when any of the following conditions have been met:
- Coolant temperature reaches 18 °C (64 °F).
- The engine has been running for fourteen minutes.
Cold mode operation varies the fuel injection amount for white smoke cleanup. Cold mode operation also varies the timing for white smoke cleanup. The engine operating temperature is usually reached before the walk-around inspection is completed. The engine will idle at the programmed low idle rpm in order to be put in gear.
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A machine equipped with this electronically controlled engine should not be moved until it is out of Cold Mode operation. If the machine is operated while in Cold Mode operation power will be noticeably reduced. |
After the cold mode is completed, the engine should be operated at low rpm until normal operating temperature is reached. The engine will reach normal operating temperature faster when the engine is operated at low rpm and low power demand.
Customer Specified Parameters
The engine is capable of being programmed for several customer specified parameters. For a brief explanation of each of the customer specified parameters, see the Operation and Maintenance Manual.