4.7.4 Replacement of gearbox, axis 6Location of gearboxThe axis 6 gearbox is located in the center of the wrist unit as shown in the figurebelow.xx0600003085Gearbox, axis 6 (IRB 6620)AAttachment screws, gearboxBOil plug, drainingCOil plug, fillingDTurning diskEAttachment screws, turning diskFRequired equipmentNoteArticle numberEquipment, etc.Includes o-ringFor spare part number,see Spare part lists onpage 351.GearboxMust be replaced when reas-sembling gearbox.3HAB3772-58O-ringFor type 2 of the gearbox.3HAB3772-57O-ring164.7x3.53Must be replaced when reas-sembling gearbox.For type 2 of the gearbox.3HAB3772-64O-ring150.0x2.0Must be replaced when reas-sembling gearbox.For type 2 of the gearbox.3HAB3772-61O-ring12 pcs, 13.1x1.6Must be replaced when reas-sembling gearbox.For lubricating the o-ring.3HAB3537-1GreaseLoctite 57412340011-116Flange sealantContinues on next page286 Product manual - IRB 6620LX3HAC035737-001 Revision: P© Copyright 2009-2018 ABB. All rights reserved.4 Repair4.7.4 Replacement of gearbox, axis 6