LAMP GP-HEAD & SIGNAL 8I5907 - Caterpillar

Engine Specifications
Note: The front end of the engine is opposite the flywheel end of the engine. The left and the right sides of the engine are determined from the flywheel end. The number 1 cylinder is the front cylinder.
Illustration 1 g01187485
Cylinder and valve location
(A) Exhaust valves
(B) Inlet valves
Table 1
Engine Specifications
Operating Range (rpm) 900 to 2800(1)
Number of Cylinders 4 In-Line
Bore 105 mm (4.13 inch)
Stroke 127 mm (5 inch)
Aspiration Turbocharged or
Turbocharged aftercooled
Compression Ratio 16.2:1
Displacement 4.4 L (268.5 cubic inch)
Firing Order 1-3-4-2
Rotation (flywheel end) Counterclockwise
Number of valves for each cylinder 4
Valve Lash Setting (Inlet) 0.35 mm (0.013 inch)
Valve Lash Setting (Exhaust) 0.35 mm (0.013 inch)
(1) The operating rpm is dependent on the engine rating, the application, and the configuration of the throttle.Electronic Engine Features
The engine 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 monitoring
Engine speed governing
Control of the injection pressure
Cold start strategy
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, "Features and Controls" topic (Operation Section).Engine Diagnostics
The engine has built-in diagnostics in order to ensure that the engine systems are functioning correctly. The operator will be alerted to the condition by a "Stop or Warning" lamp. Under certain conditions, the engine power and the engine speed may be limited. The electronic service tool may be used to display the diagnostic codes.There are two types of diagnostic codes: active and logged.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.For more information refer to Troubleshooting manual.Engine Cooling and Lubrication
The cooling system consists of the following components:
Gear-driven centrifugal water pump
Water temperature regulator which regulates the engine coolant temperature
Gear-driven rotor type oil pump
Oil coolerThe engine lubricating oil is supplied by a rotor type oil pump. The engine lubricating oil is cooled and the engine lubricating oil is filtered. The bypass valve can provide unrestricted flow of lubrication oil to the engine if the oil filter element should become plugged.Engine efficiency, efficiency of emission controls, and engine performance depend on adherence to proper operation and maintenance recommendations. Engine performance and efficiency also depend on the use of recommended fuels, lubrication oils, and coolants. Refer to this Operation and Maintenance Manual, "Maintenance Interval Schedule" for more information on maintenance items.Option Section
There are two different types of fuel priming pump available, hand primer or an electrically operated primer. There are two different types of crankcase breather, open breather or filtered open breather.