TURBOCHARGERS - TM-5-3820-256-24-5

Figure 1. - Typical Turbocharger and Common Parts

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 GENERAL Turbocharger Diagnostic Data: Prior to servicing the Turbocharger diagnose the problem. Replace the Turbocharger if: - The Compressor wheel or Turbine wheel has rubbed on its housing causing heavy damage. Replace the Core Assembly If: - The Compressor wheel or Turbine wheel has rubbed on Its housing causing damage to the housings or wheels themselves. NOTE: High spots must be removed from the housings before reuse with a new core assembly. If engine and Turbocharger are opperable perform engine diagnostic tests as detailed In appropriate DIAGNOSTIC MANUAL. NOTE: Engine performance problems are usually related to secondary problems in other engine systems: Engine Performance Problem: Turbocharger shaft seals leak oil Into the Intake or exhaust manifolds, resulting in black smoke and excessive engine temperatures. Secondary Problems: a. Excessive Intake restriction caused by: - Dirty Air filters - Collapsed Intake pipes or hoses b. Restricted Turbocharger oil drain system caused by: - Plugged hoses - Collapsed hoses c. Excessive crankcase pressure caused by: - Dirty crankcase breather. - Overfilling crankcase with engine oil. - Excessive engine blow by. Specific diagnostic data may be located in the Turbocharger Manual. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 2

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