Figure 2. - Turbocharger Core Assembly

Figure 4. - Turbocharger Properly Capped

TM-5-3820-256-24-5 Drilling System Well Rotary Truck Mounted Air Transportable 600 Feet Capacity Model LP-12 NSN 3820-01-246-4276 Manual
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SERVICE MANUAL TURBOCHARGERS Section 1 The Turbocharger Is essentially an exhaust driven centrifugal air compressor. Its purpose Is to Increase diesel engine power output by supplying compressed inlet air to the engine. The Turbocharger consists of the following main parts: (See Fig. 2). 1. Turbine Wheel (2) 2. Bearing (3) 3. Compressor Wheel (4) The Turbine Wheel is located at one end of the Bearing Housing; the Compressor Wheel is at the other end. A shaft (5) connects the Turbine Wheel with the Compressor Wheel, making It a wheel assembly. The Bearing Housing is oil cooled. Engine oil is circulated through the Bearing Housing which acts as a heat barrier between the hot Turbine and the compressor. Bearings are of the sleeve type and are lubricated by engine oil. Oil is taken directly from the clean oil side of the engine oil filters. Piston ring type seals are used at each end of the shaft. Turbine Housing (e) and Compressor Housing (7) are located at opposite ends of the core assembly. Figure 2. - Turbocharger Core Assembly 1. Core Assembly 2. Turbine Wheel 3. Bearing 4. Compressor Wheel 5. Shaft 6. Turbine Housing 7. Compressor Housing CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 3

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