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Barko 495B - SE Service Manual
Also see for 495B - SE: Operator's manual
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Service Manual495B SE (S)65Last Updated - 9/28/2016ELECTRIC COLLECTOR MAINTENANCECOLLECTOR DESCRIPTIONThe electric collector is designed for maximum efficiency with a minimum of maintenance. Located at the center ofrotation, collector rings (on the core assembly) maintain full electrical contact at all times between a rotating memberwith continuous (360 degree) rotation and a stationary member. Without the collector, the wire harness would twist offand electrical contact would be lost.On all circuits from 10 to 30 amp capacity, the brushes ride on a 3/16" wide brass ring.One brush pair per circuit is used on 10 to 20 amp circuits.Two brush pairs per circuit are used on 30 amp circuits.On circuits with 45 and 75 amp capacity, the brushes ride on a 3/8" wide brass ring.A single pair of wide brushes is used on 45 amp circuits.Two pair of wide brushes are used on 75 amp circuits.On circuits with special 7.5 amp capacity, the brushes ride on a 3/32" brass ring.Brushes are fastened to the brush arms to allow pivoting of the brushes. This assures complete contact at all timesbetween the brush and the brass ring, and is especially important if an orbiting condition develops as the equipmentages.COLLECTOR MAINTENANCEUnder normal operating conditions, the self-cleaning brushes will last the life of the equipment. However, if thecollector is not revolved for some time, it will collect fine silt (or, in a salt atmosphere, corrosion may result). If thishappens, the equipment should be rotated through several revolutions if possible. The cleaning action of the brushesshould clean the ring surfaces. If it does not, or if it is not practical to revolve the machine, it may be necessary touse a standard non-residue solvent to clean the rings. Then lightly sand the brushes and rings with a fine grade ofsandpaper and dust off with compressed air.The brush assemblies can be replaced if needed. See Brush Assembly Replacement.Knife Disconnect Terminalswith Plastic SleevesMounting Tube(fastened to stationarymember of machine)Brush HarnessCenter HarnessSet Collar (socket screw-type)Cap ScrewCoverOutboard Bearing (nylon)Base BracketBrush Holding StudBase Bracket ConnectorBrush/Arm/Spring AssembliesAcorn Nut Hex Lock NutsNylon Rub DiskSet Screw-Type ConnectorsJam NutsNylon BearingCore Assembly (has brass rings that brushesride on) |
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