Operation Manual / TPR56-F + TPR61-F4 Operation / 4.3 Replacement intervals for turbocharger components© Copyright 2018 . All rights reserved. HZTL2490_EN Revision D May 20184.3 Replacement intervals for turbochargercomponentsRotating components The recommended replacement intervals for the compressor and turbinewheels due to stress caused by centrifugal forces and load cycles are cal-culated under consideration of the operating conditions while applyingthe safety concept for rotating components. They can be found on theturbocharger rating plate. Incalculable influencing parameters canshorten the recommended replacement intervals for the rotor,see Influ-encing parameters.Non-rotating components The expected replacement intervals for non-rotating components andbearing parts are extremely dependent upon system-specific operatingconditions,see Influencing parameters.When the specified, periodic inspections are carried out, the individualcomponents are inspected for wear and tear and replaced if necessary.In this way, trouble-free operation is ensured.Influencing parameters The following parameters influence the replacement intervals for tur-bocharger components:Parameters influencing bearing parts¡ Poor quality of the lubricating oil (lubrication oil filter system, condi-tion of lubricating oil)¡ Unusual loads (vibration, start/stop frequency)¡ Non-permissible state of rotor unbalanceParameters influencing non-rotating components exposed toexhaust gas¡ Fuel quality¡ Load profile (thermal load changes, number of starts/stops)¡ Temperature level of exhaust gasParameters influencing rotating components exposed to exhaustgas¡ Fuel quality¡ Load profilePage 37 / 79