Walker DB6660 Owner's Manual

Contents

Maintenance Instructions LUBRICATION44LUBRICATIONProper lubrication is an important maintenance pro-cedure. It reduces wear and makes the machinequieter and easier to operate.Rotary Broom GearboxThe gearbox is permanently lubricated (oil filled) andsealed requiring no scheduled lubrication. However,the gearbox oil seal(s) should be checked every 25hours for indication of an oil leak. If an oil leak isnoted, replace the oil seal and relubricate the gear-box as follows:1. Remove the gearbox following the proceduredescribed in REPLACING/REPAIRING the Ro-tary Broom Gearbox in this section.Rotary Broom Gearbox with Cover Removed2. Clean the area around the plug located on thefront of the gearbox.3. Remove the gearbox plug on the gearbox.4. If the lubricant is flowing out of the plug hole, thegearbox is full. Reinsert the plug. If no lubricantflows out, add SAE E.P. (Extreme Pressure)90W oil into the gearbox through the plug holeuntil it starts to flow out.5. Wipe the threads of the gearbox plug before re-installing.6. Torque screws to 24 in-lb (2.7 N·m).NOTE: In case the gearbox is completelydrained of oil, approximately 5 fl. oz. (15 cl) of oilis required to refill the gearbox.Rotary Broom Drive ChainLubricate the drive chain every 25 hours. A lightpenetrating oil or special purpose chain oil is recom-mended. Lubricate the drive chain as follows:1. Remove the two (2) bolts fastening the chainguard cover to the broom housing and removethe cover.Remove Chain Guard Cover2. Apply oil to the drive chain.3. Reinstall the chain guard cover by reversing theremoval procedures.WARNINGDO NOT attempt to lubricate the machinewith the tractor engine running. Disen-gage the PTO clutch, shut off the ma-chine, and remove the ignition key.GearboxPlugGearboxMountingBolt GearboxCoverDipstick PlugChain Guard BoltsChain Guard CoverDrive Chain