Quantcast 3-13.2.  Inspection.

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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 e. Remove two capscrews (3) and lockwashers (4), securing oil drain line (5) to turbocharger.  Disconnect line (5) from turbocharger and remove gasket (6); discard lockwashers (4) and gasket (6). f. Remove  four  capscrews  (7),  nuts  (8),  lockwashers  (9),  and  flatwashers  (10),  securing  turbocharger  (11)  to exhaust  manifold.    Remove  turbocharger  and  stainless  steel  gasket  (12);  discard  lockwashers  (9)  and  gasket (12). g. Cover all openings. 3-13.2.  Inspection. 3-13.2.1  General. The following inspection procedure is recommended for systematic failure analysis of a suspected turbocharger failure. This procedure will help to identify when a turbocharger has failed, and why it has failed so primary cause of failure can be corrected.  Proper diagnosis of a "non-failed' turbocharger is important for two reasons.  First, identification of a "non- failed" turbocharger will lead to further investigation and repair of the cause of a performance complaint.  Second, proper diagnosis eliminates unnecessary expense incurred when a "non-failed" turbocharger is replaced.  Seven recommended inspection steps, (refer to FIGURE 3-25) which are explained in detail in following paragraphs, are: a. Compressor Housing Inlet and Compressor wheel. b. Compressor Housing Outlet. c. Turbine Housing Inlet. d. Turbine Housing Outlet and Turbine wheel. e. External Center Housing and Joints. f. Internal Center Housing. g. Turbo Bench Test. NOTE To  enhance  turbocharger  inspection,  an  inspection  chart  (TABLE  3-3)  can  be  used  that  lists inspection steps in the proper order and shows potential failure modes for each step.  Check off each step as you complete inspection and note any problems. 3-45


 


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