8. TURBOCHARGER 8.3 Periodic Inspection Procedure 8.3.1 Periodic inspection intervals Periodically inspect the turbocharger for the overall conditions and fouling. The inspection interval varies with the operating conditions, but refer to the table below for the guideline for each application. 8.3.2 Inspection procedure (1) Rotor rotation inspection Inspect the rotor rotation by listening to any abnormal sound generation during rotation. For inspection with a sound detecting bar, bring the tip end of the bar into strong contact with the turbo- charger case and raise the engine speed gradually. If any high pitch sound is generated at intervals of 2 to 3 seconds, the rotation is abnormal.
Since the bear- ing or rotor may be defective in this state, either replace or overhaul the turbocharger. (2) Rotor play inspection Remove the turbocharger from the engine and inspect the rotor play in the axial and radial directions according to the procedure below. After removing the turbocharger from the engine, always bind the oil inlet and outlet holes with adhesive tape.
Rotor play in axial direction 82E-5 – 98E-5 SERIES 8-7 Application Inspection interval For construction machinery Every 6 months or 500hrs Every 12 months or 1,000hrs Every 24 months or 2,000hrs Rotor rotation Q Rotor play Q Overhaul and overall inspection Q Oil filter cleaning and inspection Based on operation manual Engine oil replacement