Walker MC (18 HP) Owner's Manual

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Contents

Walker MC (18 HP) Owner's Manual Manual pdf 49 page image

Maintenance Instructions LUBRICATION45The mower deck gearboxes (tee gearbox and bladedrive gearboxes) are connected as a unitized assem-bly, and oil flows freely between them. The gearboxesare permanently lubricated (oil filled) and sealed re-quiring no scheduled lubrication. However, the gear-box oil seals should be checked every 25 hours forindication of an oil leak; particularly the lower sealson the blade drive gearboxes should be inspected,since they operate in a dirty environment. If an oil leakis noted, replace the oil seal and relubricate the gear-box assembly as follows:1. Remove gearbox cover (footrest). Deck orien-tation should be the normal operating position.Mower Deck Gearboxes(shown with gearbox cover removed for clarity)2. Clean the area around the individual gearboxcover plates to prevent contaminants from en-tering the gearcase.3. Remove the screws securing the cover plateson the blade drive gearboxes.4. Check the level of lubricant in the gearboxes. Ifthe lubricant is low, add SAE E.P. (ExtremePressure) 90W oil until the oil level is up to (sub-merges) the horizontal shaft in the gearbox(shaft parallel to cover plate).NOTE: In case the gearboxes are completelydrained of oil, approximately 5 fl. oz. (15 cl) of oilper gearbox is required to refill the gear driveassembly.NOTE: Since the gearboxes are connected asa unit by connector tubes, it is necessary to addoil slowly. Allow a few minutes after adding oilfor the oil to flow throughout the assembly andthe oil level to stabilize before reassembly.IMPORTANT: DO NOT overfill the deck gear-boxes. The gearbox assembly is not vented,and overfilling with oil will cause excessive pres-sure and result in oil leaks.5. Check condition of the cover gasket and replaceif worn or damaged. Reinstall gearbox coverplates; torque screws to 24 in-lb (2.7 N⋅m).DSD52 Mower Deck LubricationThere are several special lubrication requirementsfor the DSD52 mower deck in addition to the require-ments detailed in the Chassis and Deck Lubrica-tion illustration. Lubricate the locations shown in theBlade Spindle Lubrication and Gearbox, DollyWheel, and U-Joint Lubrication photos and checkand maintain oil in the belt drive gearbox.1. Lubricate the blade spindles every 25 hourswith two (2) shots of SAE general purpose lithi-um or molybdenum base grease.Blade Spindle Lubrication2. Check the oil level in the belt drive gearbox ev-ery 100 hours (or sooner if a visible oil leak hasdeveloped). With the deck in the normal oper-ating position, remove the level plug in the sideof the gearcase. Add SAE E.P. (Extreme Pres-sure) 90W oil to maintain the oil level to the plug.If the oil level is low, check the gearbox for anyindication of an oil leak. If an oil leak is noted,the gearbox will need to be removed and rebuilt.3. Lubricate the dolly wheel pivot every 25 hourswith general purpose grease.Blade DriveGearboxesTeeGearboxBladeSpindles