NoteActionRequired oil level: 53-63 mm below themachined surface at the oil plug holeInspect the oil level through the inspectionhole.TipIf there is a risk of debris falling into thegear when opening the oil plug for inspec-tion, it is instead recommended to use thevent hole for oil level inspection:xx22000021476xx2200001754Required oil level at vent hole is: 24 mm ±5 mm below the oil plug holexx2300000001CAUTIONThe oil level sinks when the oil fills all cav-ities in the gearbox. Wait until the oil stopssinking, before measuring the oil level.Remove the oil dispenser and refit theprotective cap to the nipple.7Continues on next page142 Product manual - IRB 67103HAC085695-001 Revision: A© Copyright 2023 ABB. All rights reserved.4 Maintenance4.4.2 Changing the oil in axis-1 gearboxContinued