Initial Operation/Maintenance34 EN 4161.758.102q – 2017-095 Initial Operation5.1 Initial inspectionBefore initial operation, the correct installationcondition of the gearbox must be checked. Mechanical fastening Motor flange-mounting Gearbox oil connections Oil supply/oil fill ensured Electrical connections Ease of movement (can be turned by hand) Vertical breather position5.2 Checking setting dimension of sungearControl dimension "A": 125.1 mm, tolerance+0.2 mm, measured between housing connectionsurface and front side of sun gear. When measur-ing, press the sun gear towards the output until itreaches the stop.The dimension is set correctly ex works.Check the dimension after inserting the sun gear,e. g. following disassembly. Dimension "A" iscorrect if the spring assembly (2) and shims (1)are correctly installed in their entirety (see detailedfigure below).6 Maintenance6.1 Oil changeOil change interval: every 5,000 hours ofoperationRisk of burns due to contact with hot oil.Slight to moderate injury possible. Wear protective goggles. Wear protective gloves.Allow used oil to drain at operating temperatureinto a suitable container.The drain connections differ depending on theinstallation position and gearbox version (refer toChap. 4.6.3.1).Fill new gearbox oil at connection I.The oil level is correct when it reaches the centerof the oil level gage glass with a stationarygearbox.The oil level is binding. The number of liters statedon the model plate is a reference value.If available, briefly allow oil pump to run afterfilling with oil in order to vent, top up oil ifrequired.12A