4.4.3 Replacement of the upper armLocation of the upper armThe upper arm is located on top of the robot as shown in the figure below.xx0600003057Motor, axis 3AGearbox, axis 3BAttachment screws, M12x50 quality 12.9 Gleitmo (20 pcs)CAttachment screws, M16x50 quality 12.9 Gleitmo (16 pcs)DHole in the lower armEUpper armFRequired equipmentNoteArt. no.Spare part no.Equipment, etc.See Spare part listson page 351.Upper arm (Axes 3-4)Replace only if damaged.O-ringInstruction 3HAC026600-002 is enclosed.3HAC026597-001Lifting tool-Lifting chain-RoundslingAlways use in pairs.Guiding pins-Hoisting blockUsed to lubricate o-rings.3HAB3537-1GreaseContinues on next page214 Product manual - IRB 6620LX3HAC035737-001 Revision: P© Copyright 2009-2018 ABB. All rights reserved.4 Repair4.4.3 Replacement of the upper arm