93004A 2 Mercury INSTALLATION TOOL, Lock Ring

Idling
Idle speed is adjustable on Caterpillar electronic engines. Consult your Caterpillar dealer for information. The idle rpm is preset between 700 and 750 rpm.Avoid excess idling. If the vehicle is parked for more than five minutes, stop the engine. An engine can burn from 2.8 L (0.7 US gal) to 5.7 L (1.5 US gal) of fuel per hour while the engine is idling. Excessive idling can cause carbon buildup and/or excessive idling can cause the engine to slobber. This is harmful to the engine.If extended idle time is required, control the engine rpm to 1000 rpm or above 1000 rpm. Ensure that the coolant temperature exceeds 82° C (180° F). Consult your Caterpillar dealer for assistance.The engine may be programmed in order to provide an elevated idle speed when the battery voltage drops below a level that is predetermined. The engine rpm will increase to the preprogrammed amount for a time of 5 minutes. At the end of that 5 minute period, the engine will return to low idle. The engine will return to the elevated idle speed that is programmed for another 5 minutes if the battery is still below the low limit that is programmed. This cycle will continue until one of the following occurrences takes place.
The battery has recharged sufficiently.
The operator has depressed the clutch.
The operator has depressed the brake.
The engine has been put into PTO mode.
The transmission has been put into gear.Fast idle can be programmed within the range of 700 rpm to the top engine limit. Fast idle requires an "ON/OFF" switch on the dashboard. Consult your Caterpillar dealer for assistance.Idle Shutdown Timer
The idle shutdown timer can be programmed in order to shut down the engine after a specific time period of idling. The idle time can be programmed from three minutes to 1440 minutes (24 hours). If the idle shutdown timer is set to 0 minutes, the idle shutdown feature is disabled. If the setting of the timer is unknown, allow the engine to idle. Observe the time that elapses before the engine shuts down. The following conditions must be met in order to activate the idle shutdown timer:
The idle shutdown feature is selected.
No vehicle speed is detected by the Engine Control Module (ECM).
The engine is not under load.
The engine is at operating temperature. The engine is not in Cold Mode.After the vehicle is stationary, the idle shutdown timer begins. The engine can be operating at low idle or at an idle rpm that is selected by the idle governor. The "CHECK ENGINE/DIAGNOSTIC" lamp will flash rapidly for 90 seconds prior to shutdown. Movement of the vehicle automatically resets the idle shutdown timer to the programmed setting.The following conditions must be met in order to override the idle shutdown timer:
Program the "ALLOW IDLE SHUTDOWN OVERRIDE" to "YES".
The "CHECK ENGINE/DIAGNOSTIC"lamp will flash rapidly for 90 seconds prior to shutdown. Depress the service brake or the clutch pedal during the 90 seconds when the "CHECK ENGINE/DIAGNOSTIC" lamp flashes.After an idle shutdown, the engine can be restarted without turning the ignition keyswitch to the OFF position.The override function is disabled if the "ALLOW IDLE SHUTDOWN OVERRIDE" is programmed to "NO".Cold Mode Operation
Cold mode is initiated if the sum of the coolant temperature and the inlet air temperature is below 18 °C (64 °F). In cold mode, the low idle is increased to 1000 rpm and the engine power is limited. The strategy for cold mode provides reduced smoke emission and faster warm-up time.Cold mode is deactivated when the temperature condition is met, or when the engine has been operating for 12 minutes.After the cold mode is completed, the engine should be operated at low rpm and low load 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. This method is faster than trying to reach operating temperature by idling with no load.
It is not recommended that the vehicle be moved until the engine is out of cold mode. Power may be noticeably reduced if the vehicle is operated while the engine is in cold mode. At a speed above 8 km/h (5 mph), the low idle speed will be reduced to the customer programmed low idle speed. The power will still be reduced.
Cold mode is disabled if the throttle, the service brake, or the clutch (if equipped) is depressed. The rpm for cold mode operation drops to the programmed low idle speed in order to allow the transmission to be put into gear.Muffler and Converter (If Equipped)
The muffler and converter will become extremly hot during engine operation. A hot muffler and converter can cause serious burns. Allow adaquate cooling time before working on or near the muffler and converter.
Proper operation, driving techniques and maintenance are key factors in obtaining the maximum service life of the muffler and converter. Some precautions should be taken if the engine is equipped with a muffler and converter.Avoid excess idling. Excessive idling can cause the muffler and converter to plug. A plugged muffler and converter will lead to an increase in exhaust back pressure. Operating the engine in extremely cold conditions can cause the muffler and converter to plug sooner. Use the procedure below to clean out the muffler and converter if extended idle periods or extended low load periods are required. If the engine is operated at low idle or at low load for 24 or more consecutive hours, the engine should be run at rated conditions for five to fifteen minutes. Running the engine at rated conditions should clean out the muffler and converter. If the engine has low power or the engine does not respond properly, refer to the Service Manual or an authorized Caterpillar Service Center.Diesel Particulate Filter (If Equipped)
The diesel particulate filter (DPF) may become restricted. The restriction is caused by ash and soot from the exhaust. A restricted exhaust will increase the exhaust back pressure. The amber colored warning light will turn on when the exhaust