TUBE 2N4897 - Caterpillar

The Cat C7.1 ATAG2 (BSFC) Generator Set Engine has the following characteristics.
In-line 6 cylinder
Four stroke cycle
Two valves in each cylinderEngine 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 g00939480
Cylinder and valve location
(A) Inlet valve
(B) Exhaust valve
Table 1
Engine Specifications for the C7.1 engine
Operating Range (rpm) 800 to 2400(1)
Number of Cylinders 6 In-Line
Bore 105 mm (4.13385 inch)
Stroke 135 mm (5.31495 inch)
Aspiration Turbocharged aftercooled
Compression Ratio 18.2:1
Displacement 7.01 L (427.78 cubic inch)
Firing Order 1-5-3-6-2-4
Rotation (flywheel end) Counterclockwise
Valve Lash Setting (Inlet) 0.35 mm (0.013 inch)
Valve Lash Setting (Exhaust) 0.45 mm (0.018 inch)
(1) The operating rpm is dependent on the engine rating, the application, and the configuration of the throttle.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 Operation and Maintenance Manual, "Maintenance Interval Schedule" for more information on maintenance items.Generator
The Series LC generator has the following characteristics:
Three-phase alternating current
Single bearing
Brushless type
Random wound
Four-pole design
12 wire generator stator
Main stator is 2/3 pitch
Class H insulation
Interference suppression conforming to standard EN 55011, group 1, class B
Coastal Insulation Protection (CIP)