Walker DB6660, SB6670, DB6680 Loosen Chain Idler and Set Screws, Remove Brush from Broom Housing

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Maintenance Instructions

REPLACING/REPAIRING

6.Loosen the two sprocket set screws and push sprocket towards the brush.

Sprocket		Chain
Sprocket		Chain			Chain Idler
		Idler			Chain Idler
		Idler			Bolt

Sprocket

Screws

Flange

Bolts

Bearing
Set
Screws	Chain Guard
	Chain Guard

Loosen Chain Idler and Set Screws

7.Remove the three bolts on the bearing flanges on each side of the broom and loosen the bear- ing set screws. Push the bearings and flanges towards the brush.

8.Remove the bearing, brush support adapter and flanges on the opposite side of the sprock- et. Remove the brush by carefully sliding it downward from its position.

Brush

Support

Adapter

Bearing

Flanges

Remove Brush from Broom Housing

9.Install the new brush by reversing the removal procedure.

Rotary Broom Gearbox

Remove and replace the gearbox as follows:

1.Stop the tractor engine, set the parking brake, and remove the ignition key.

2.Loosen the set screw fastening the driveline fe- male half and slide the driveline off the gearbox shaft.

3.Remove the four (4) bolts, lock washers, and hex nuts that fasten the gearbox to the broom housing.

4.Loosen two (2) set screws on the chain drive shaft and slide it from the gearbox drive shaft.

5.Replace the gearbox by reversing the removal procedures.

Gearbox

Replace Rotary Broom Gearbox

Rotary Broom Drive Chain

The drive chain should be replaced if, when adjust- ed properly, it can be pulled away from the front of the drive sprocket more than 1/2 the height of a tooth on the sprocket. Running the rotary broom with a worn chain increases wear on the sprock- ets.

1.Remove the chain guard. Refer to LUBRICA- TION of Rotary Broom Drive Chain in this sec- tion.

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Contents Illustrated Parts Manual Foreword Table of Contents Torque Specifications Maintenance Schedule ChartImplement Hitch Assembly Electrical Components KEY to Abbreviations Used in Illustrated Parts ListGlossary General InformationIdentifying Number Locations Fill In By PurchaserSerial Number Rotary Broom Serial Number Location Serial NumberUnit Descriptions Implement Hitch SpecificationsDozer Blade Rotary BroomTWO-STAGE Snowblower Debris Blower Component Identification Implement Hitch Top View Not InstalledDozer Blade Rear View and Right Side View Not Installed Rotary Broom Rear View and Right Side View Not Installed TWO-STAGE Snowblower Two-Stage Snowblower Rear View Not Installed Debris Blower Front View and Left Side View Not Installed Debris Blower Rear View and Right Side View Not Installed Safety Instructions Before OperatingDo not operate with bystanders in the area Operating Maintenance PTO Shield Walker P/N Attaching Hitch Hitch Mount Adjust SAFETY, CONTROL, and Instruction DecalsSAFETY, CONTROL, and Instruction Decals Setup Instructions Assembly InstructionsImplement Hitch Installation Implement Hitch Jam Nut AdjustmentAttach Toggle Switch Mounting Bracket Drill Holes for Implement Hitch WiringAttach Wiring Harness and Toggle Switch Connect Harness Wire to Circuit BreakerComplete Implement Hitch Wiring Implement Hitch Wiring Diagram Attach Spring to Blade Assembly Insert Adjustment Pin and Set Blade AngleInsert Female Hitch into Blade Attachment Install Skid Shoes Rotary Boom InstallationAttach Blade to Tractor Assemble Rotary Broom Driveline Prepare Rotary Broom for InstallationAttach Broom to Implement Hitch Connect Broom Driveline to Tractor PTO ShaftAdjust Brush to Ground Contact Lock Stopper Pin in PlaceGHS Blower Intake Cover Install Plastic Insert over Chute Base Lip Install Hand Guard on ChuteInstall Rotation Worm Assembly Install Chute over Plastic InsertInstall Skid Shoes Snowblower Installation Install Reduction Box Cover Install Bolt in Reduction BoxAttach Drive Shaft Yoke to Reduction Shaft Mount Female Hitch to SnowblowerConnect Driveline Coupler to Tractor PTO Attach Snowblower to Implement HitchAttach Parallel Bar to Female Hitch Insert Rotation Handle into Rotation WormAttach Debris Blower to Implement Hitch Attach Tractor PTO to Debris Blower Input ShaftRefer to Hitch Locking Lever in Operating Instruc Refer to Angle Adjustment Pin in OperatingRefer to Ground Contact Knob in Operating Refer to Angle Adjustment Lever in OperatingOperating Instructions TWO-STAGE Snowblower ControlsTWO-STAGE Snowblower Operation PTO Clutch Engaged Engaging the SnowblowerThrow Snow to One Side Throw Snow to Both Sides Clogging ChecklistRaising and Lowering the Debris Blower Stopping the Machine Engaging the Debris BlowerMaintenance procedures requiring special training or Maintenance InstructionsModel Service Item Daily Hours Tools should be performed by a trained technicianRotary Broom Gearbox LubricationRotary Broom Gearbox with Cover Removed Remove Chain Guard CoverTwo-Stage Snowblower Reduction Chain Snowblower Lubricant Plug LocationRemove Reduction Box Cover Grease Fitting and Oil Point LubricationLubrication Implement Hitch Lubrication Points Angle Adjustment Pin Oil Dozer Blade Lubrication Points Ident Rotary Broom Lubrication Points Location Type Two-Stage Snowblower Lubrication Points Ident Lubrication Location Type Debris Blower Lubrication Points REPLACING/REPAIRING Dozer Blade Cutting Edge Replacement Rotary Broom BrushSupport Rear of Broom Housing Remove Brush from Broom Housing Loosen Chain Idler and Set ScrewsReplace Rotary Broom Gearbox Rotary Broom Drive Chain Replace Drive Chain Remove Chain Guard Loosen Chain TensionRotary Broom Drive Sprocket Sprocket WearCheck Sprocket Alignment with Chain Installed Remove and Replace SprocketAlign Sprockets Replace Snowblower Gearbox Two-Stage Snowblower Reduction Sprocket Replace Reduction ChainReduction Sprocket Wear Debris Blower Drive BeltDozer Blade Skid Shoes AdjustmentsSkid Shoe Height Adjustment Rotary Broom Brush Leveling Side to Side Level Adjustment Rotary Broom Gauge WheelsGauge Wheel Height Adjustment Proper Drive Chain Tension Two-Stage Snowblower Skid Shoes Loosen Chain Idler NutAnce under the blade. On level, paved surfaces Surface. On uneven or gravel surfaces, allow 1/2Proper Drive Belt Deflection Debris Blower Rotation Pinions Handle Adjustment Drive Belt Tension Adjustment Debris Blower Rotation PinionsTorque Specifications Removal and Storage Instructions RemovalDetach Blade from Implement Hitch Detach Snowblower from Implement Hitch Detach Rotary Broom from Implement HitchEND of Season Storage Detach Implement Hitch from TractorRotary Broom Fasteners Implement Hitch AssemblyUse only genuine Walker replacement parts Implement Hitch Electrical Components Implement Hitch Electrical Components FastenersRAD Technologies Inc Implement Hitch Electrical Components Dozer Blade Assembly Dozer Blade Assembly Rotary Broom Assembly Rotary Broom AssemblyKit I391 Side Caster Wheels Kit Rotary Broom Assembly Gearbox Assembly Driveline and Sprockets Assembly FastenersRotary Broom Drive Components Rotary Broom Drive Components Chute Rotation Assembly Snowblower Housing ComponentsSnowblower Mount Assembly Reduction Box AssemblySnowblower Housing Components Driveline and Auger Components Snowblower Drive ComponentsSnowblower Drive Components Debris Blower Components Debris Blower ComponentsDebris Blower Components Debris Blower Manual Rotation Components Debris Blower Manual Rotation ComponentsDebris Blower Manual Rotation Components KEY to Abbreviations Used in Illustrated Parts Manual Limited Warranty For Walker Commercial Rider Mower Walker MFG. CO E. Harmony ROAD, Fort COLLINS, CO 80528 970