Scrub System, Disc136Service Manual
SC6500|Scrub Brush Motor and GearboxTo Remove and Install a Gearbox Assembly1. Remove the scrub brushes from theBrush Holder(s).2. Use a 13mm socket wrench to removethe three Screws from each ThermoidDisk (flexible coupler), then removethe Brush Holder(s) from the DriveHub(s).3. Remove the hex screw and hardenedwasher holding the Drive Hub onto theGearbox Assembly, then pull the DriveHub off of the Gearbox Output Shaft.Make sure you save the key stock.4. Remove the three Hex Screws thatsecure each Gearbox Assembly to thedeck mounting plate.5. Separate the Gearbox Assembly fromthe Deck Weldment by pulling itstraight up.6. Reassemble the Gearbox Assembly tothe Deck Weldment by following theabove steps in reverse order. Makesure to reinstall the key stock.To Disassemble and Reassemble aGearbox Assembly1. Remove the three socket head capscrews securing the Gearbox tothe Brush Motor, then separate theGearbox from the Brush Motor. Makesure to save the internal Gearbox keystock for reassembly.2. Reassemble the Gearbox and Brush Motor byfollowing the above steps in reverse order.Service Note: Apply a small amountof grease or Never-Seez®anti-seize compound tothe Gearbox input andoutput shafts when youreassemble or installa Gearbox Assembly.This will aid futuredisassembly and DriveHub removal.BrushHolderRotationScrew (3)ThermoidDisk (2)DriveHubHexScrew (3)GearboxOutputShaftGearboxAssemblyGearbox(typical)Brush Motor(typical)DeckWeldment
