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PLATE-WEAR 4415512 - Caterpillar



4415512 PLATE-WEAR Caterpillar parts PLATE
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86
Alternative (cross code) number:
CA4415512
441-5512
4415512
Caterpillar 4415512 PLATE-WEAR

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Governor
The fuel rack is connected to the linkage, which controls the fuel injection pump. This linkage is located in the timing case.These engines have a mechanical governor in order to control engine rpm. The governor operates for all engine rpm. The governor weight assembly is installed on the front of the gear of the camshaft. The other components of the governor are installed in the timing gear case.
Illustration 3 g00822233
Governor control mechanism in the timing gear case
(1) Connection for the linkage to the fuel injection pump
(2) Mechanical stop control
(3) Lever return spring
(4) Control lever
(5) Start spring
(6) Arm
(7) Governor adjustment screwThe movement of the governor weight assembly is transferred to the fuel rack on the fuel injection pump by control lever (4), arm (6) and the linkage to the fuel injection pump. A spring connects the arm and the control lever. This spring controls the movement of the governor weight assembly on the camshaft. When the angle of the control lever changes, tension on the spring changes. This action controls the linkage to the fuel rack on the fuel injection pump, which controls the engine rpm.The bolt for the maximum speed adjustment is mounted in the cylinder block. This adjustment limits the movement of arm (6). This adjustment should only be made by personnel with the correct training.The bolt for the maximum fuel adjustment is mounted in the cylinder block. This adjustment regulates the fuel injection at high engine rpm. This adjustment should only be made by personnel with the correct training.A spring connects the linkage to the fuel injection pump and mechanical stop control (2). When the engine is first started, the spring automatically increases the fuel flow to the cylinders.The fuel injection pump timing, the low idle, and the high idle are preset at the factory. Adjustments to the pump timing, and idle rpm should only be made by personnel which have had the correct training. The timing for the fuel injection pump should only change if the camshaft or the cylinder block are replaced. The fuel injection pump timing should not change if the fuel injection pump is reinstalled with a shim that is the same size.The fuel rack automatically returns to the excess fuel position when the engine is stopped with the stop solenoid is energized and the engine is not running. The excess fuel position aids the cold starting of the engine.Fuel Injection Pump
Illustration 4 g00746909
Fuel injection pump (typical example)
(1) Fuel line to the fuel injection nozzles
(2) Fuel delivery valve
(3) Nuts and bolts for mounting the fuel injection pump to the cylinder block
(4) Shim
(5) Vent screw for the fuel injection pump
(6) Fuel flow from the fuel transfer pumpThe engines have the energized-to-run system for starting the engine and stopping the engine. The electric fuel shutoff solenoid must be energized in order for fuel to flow to the engine cylinders.The fuel injection pump is a cassette type pump. The cassette type pump contains the following components: fuel delivery valves, fuel rack and pushrods. The fuel injection pump


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