IDLER & BEARING AS 2674829 - Caterpillar

Model Views
The following model views show typical features of the C-15 Petroleum Engine. Due to individual applications, your engine may appear different from the illustrations.
Illustration 1 g01050454
(1) Lifting eyes (2) Water temperature regulator housing (3) Water pump (4) Engine oil cooler (5) Engine oil filter and base
Illustration 2 g01050455
(6) Engine crankcase breather (7) Engine oil filler cap (8) Turbocharger (9) Electronic control module (ECM) (10) Engine oil level gauge (11) Secondary fuel filter (12) Fuel priming pump (13) Fuel transfer pump (14) Auxiliary water pump (15) Water cooled aftercoolerGeneral Information
This C-15 Engine is an electronically controlled mechanically actuated unit injector diesel engine with a direct injection type. The C-15 is an in-line six cylinder engine with a bore of 137 mm (5.4 inch) and with a stroke of 165 mm (6.5 inch). The C-15 engine has a total displacement of 14.6 L (891 cu in). The engine is configured for direct injection that is turbocharged and aftercooled with electronic unit injection.The C-15 Engine incorporates an electronic control system with electronically controlled fuel injection. These advancements in technology offer the following improvements over engines with mechanically operated fuel systems: enhanced engine efficiency, reduced smoke levels and lower exhaust emissions.The Electronic Unit Injection (EUI) fuel system eliminates many of the mechanical components that are traditionally used in the fuel injector assembly. The EUI system increases engine timing accuracy and air/fuel ratio control. The engine's timing advance is achieved by precise control of the fuel injection timing, while engine rpm is controlled by adjusting the injection duration.The engine is equipped with an Electronic Control Module (ECM) that is used to control engine operation. The ECM 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 ECM can send a signal to a warning lamp or a diagnostic lamp that will alert the operator to the condition. 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 the ECM memory.Starting the Engine
The ECM will automatically provide the correct amount of fuel that is necessary to start the engine. The throttle should not be held while the engine is being cranked. If the engine fails to start in 30 seconds, the starter switch should be released. The starter motor should be allowed to cool for two minutes before being used again.
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 engine 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 uses a modified control map, that is stored in