KIT-FRONT WHEEL & BRAKE BRG 2931016 - Caterpillar

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Turbocharger (4) Air inlet (5) Compressor housing (6) Compressor wheel (7) Bearing (8) Oil inlet port (9) Bearing (10) Turbine housing (11) Turbine wheel (12) Exhaust outlet (13) Oil outlet port (14) Exhaust inletThe exhaust gases enter the turbocharger and the exhaust gases turn the turbine blades of the turbocharger. Because the turbocharger turbine wheel is connected by a shaft to the turbocharger compressor wheel, the turbine wheel and the compressor wheel turn together. The turbocharger compressor wheel and the turbine wheel turn at very high rpm. The rotation of the compressor wheel draws clean air through the compressor housing air inlet. The action of the compressor wheel blades causes a compression of the inlet air. This compression allows a larger amount of air to enter the engine. With more air in the engine, the engine is able to burn more fuel. The overall effect is an increase in power.When the load on the engine increases or when a greater engine speed is desired, additional fuel is injected into the cylinders. This creates hotter exhaust gases, which will cause the turbine wheel and the compressor wheel to turn faster. Additional air is forced into the engine as the compressor wheel turns faster. The increased amount of air allows the engine to produce more power. The engine produces more power because the engine is able to burn additional fuel with greater efficiency.
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Turbocharger with wastegate (15) Canister (16) Actuating leverLow boost is a condition that occurs when the turbocharger produces less than optimum boost pressure. There is a spring that is inside canister (15). Under low boost, the spring pushes on the diaphragm in canister (15). This moves actuating lever (16). The actuating lever closes the wastegate, which will allow the turbocharger to operate at maximum performance.Under conditions of high boost, the wastegate opens. The open wastegate allows exhaust gases to bypass the turbine side of the turbocharger. When the boost pressure increases against the diaphragm in canister (15), the wastegate is opened. The rpm of the turbocharger is limited by bypassing a portion of the exhaust gases around the turbine wheel of the turbocharger.Note: The calibration of the wastegate is preset at the factory. No adjustment can be made to the wastegate.Bearing (7) and bearing (9) in the turbocharger use engine oil that is under pressure for lubrication. The lubrication oil for the bearings flows through oil inlet port (8) and into the inlet port in the center section of the turbocharger cartridge. The oil exits the turbocharger through oil outlet port (13). The oil then returns to the engine oil pan through the oil drain line for the turbocharger.Wastegate Solenoid
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(1) Outlet fitting (2) Inlet fitting (3) Vent (4) Wastegate solenoid (5) ManifoldThe wastegate solenoid allows the ECM to fine tune the amount of boost that is generated. A wastegate solenoid is necessary in order to prevent the turbocharger from overspeeding under a high load condition. This will also prevent the boost from exceeding the designed