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TRACK G.-18 7B0156 - Caterpillar



7B0156 TRACK G.-18 Caterpillar parts TRACK
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31
Alternative (cross code) number:
CA7B0156
7B-0156
7B0156
Caterpillar 7B0156 TRACK G.-18

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Table 1
C7 Industrial Engine Specifications    
Arrangement and Cylinders     In-Line 6 cylinder    
Bore     110 mm (4.3 inch)    
Stroke    
127 mm (5.0 inch)    
Aspiration     Turbocharged
ATAAC (1)    
Displacement    
7.2 L (440 in3)    
Firing Order     1-5-3-6-2-4    
Rotation (flywheel end)     Counterclockwise    
Valve Lash (inlet)    
0.38 mm (0.015 inch)    
Valve Lash (exhaust)    
0.64 mm (0.025 inch)    
( 1 ) Air-to-air aftercooledElectronic Engine Features
The Caterpillar C7 Industrial Engines are designed for electronic controls. The integral on board computer controls the operation of the engine. Current operating conditions are monitored. The Electronic Control Module (ECM) controls the response of the engine to these conditions and to the demands of the operator. These conditions and operator demands determine the precise control of fuel injection by the ECM. The electronic engine control system provides the following features:
Engine speed governor
Automatic air/fuel ratio control
Torque rise shaping
Injection timing control
System diagnosticsFor more information on electronic engine features, refer to the Operation and Maintenance Manual, "Engine Features and Controls" topic (Operation Section).Additional Features
The following additional features provide increased engine fuel economy and serviceability:
Cold starting capability
Tampering detection
DiagnosticsHydraulic Electronic Unit Injectors
Hydraulically Actuated Electronic Unit Injectors (HEUI) perform the following functions: pumping of fuel, fuel metering and fuel timing.The unit injectors are controlled by the ECM which uses the camshaft position and the engine speed signals from the engine speed/timing sensors and the inlet air pressure sensors. The engine's rated rpm is identified on the Information Plate.Engine Diagnostics
The engine has built-in diagnostics in order to ensure that all of the components are functioning properly. In the event of a deviation from the programmed limits, the operator will be alerted to the condition by a "DIAGNOSTIC" lamp that is mounted on the control panel. Under certain conditions, the engine horsepower may be limited. A Caterpillar electronic service tool may be used to display the diagnostic code.There are three types of diagnostic codes: active, logged and event.Most of the diagnostic codes are logged and stored in the ECM. For additional information, refer to the Operation and Maintenance Manual, "Engine Diagnostics" topic (Operation Section).The ECM provides an electronic governor that controls the injector output in order to maintain the desired engine rpm. The functionality of electronic governor is similar to the Caterpillar mechanical governor.Engine Cooling and Lubrication
The cooling system consists of the following components:
Centrifugal pump that is driven by belts
Water temperature regulator which regulates the engine coolant temperature
Oil cooler and radiator which incorporates a shunt systemThe engine lubricating oil that is supplied is cooled. The engine lubricating oil is also filtered. Bypass valves provide unrestricted flow of lubrication oil to the engine components during the following conditions:
High oil viscosity
Plugged oil cooler or plugged oil filter elements (paper cartridge)Engine Service Life
Engine efficiency and maximum utilization of engine performance depend on the adherence to proper operation and maintenance recommendations. In addition, use recommended fuels, coolants and lubricants. Use the Operation and Maintenance Manual as a guide for required engine maintenance.Expected engine life


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