GEAR 1W4739 - Caterpillar

Three Cylinder Engine C1.7
This Caterpillar C1.7 industrial engine is a turbocharged engine and is equipped with a Diesel Oxidation Catalyst (DOC) aftertreatment system. The DOC aftertreatment system does not require a service interval and the engine is electronically governed with a high-pressure fuel rail system. The engine can be identified by the serial number prefix G34.The Caterpillar C1.7 industrial engines have the following characteristics.
In-line 3 cylinder
4 stroke cycle
Two valves per cylinder
DOC aftertreatment
Illustration 1 g00852304
(A) Exhaust valves
(B) Inlet valves
Table 1
C1.7 Industrial Engine
Bore 84 mm (3.307 inch)
Stroke 100 mm (3.937 inch)
Displacement 1.66 L (101.3 cubic inch)
Compression Ratio 18: 1
Aspiration Turbocharged
Valve Lash Setting (Inlet) 0.20 mm (0.008 inch)
Valve Lash Setting (Exhaust) 0.20 mm (0.008 inch)
Firing Order 1-2-3
Rotation (flywheel end) Counterclockwise Four Cylinder Engine C2.2
This Caterpillar C2.2 industrial engine has two variants, the turbocharged engine and the turbocharged charge cooled engine. Both engine variants have a Diesel Oxidation Catalyst (DOC) aftertreatment system. The DOC aftertreatment system does not require a service interval. Both engine variants are electronically governed with a high-pressure fuel rail system. The engines can be identified by the serial number prefix G43 or serial number prefix J26.The Caterpillar C2.2 industrial engines have the following characteristics.
In-line 4 cylinder
4 stroke cycle
Two valves per cylinder
DOC aftertreatment
Illustration 2 g00296424
(A) Exhaust valves
(B) Inlet valvesSome engines may be supplied with a throttle control valve and temperatures sensors in the DOC. Some engines may be supplied without these components. The different is due to engine design development.
Table 2
C2.2 Industrial Engine
Bore 84 mm (3.307 inch)
Stroke 100 mm (3.937 inch)
Displacement 2.216 L (135.22861 cubic inch)
Compression Ratio 18: 1
Aspiration Turbocharged or Turbocharged charge/air cooled
Valve Lash Setting (Inlet) 0.20 mm (0.008 inch)
Valve Lash Setting (Exhaust) 0.20 mm (0.008 inch)
Firing Order 1-3-4-2
Rotation (flywheel end) Counterclockwise 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
Injection timing control
System diagnosticsEngine Diagnostics
The engine has built-in diagnostics 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 horsepower and the vehicle speed may be limited. The electronic service tool may be used to display the diagnostic codes.There are four types of diagnostic codes: Active Diagnostic Code, Logged Diagnostic Code, Active Event Code and logged Event Code.The ECM provides an electronic governor that controls the injector output to maintain the desired engine rpm.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 is generally predicted by the average power that is demanded. The average power that is demanded is based on fuel