Walker MDD (20.9 HP) Owner's Manual

Also see for MDD: Owner's manual Owner's manual

Contents

Maintenance Instructions LUBRICATION532. 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 theplug. If the oil level is low, check the gearbox forany indication of an oil leak. If an oil leak is not-ed, the gearbox will need to be removed and re-built.3. Lubricate the dolly wheel pivot every 25 hourswith general purpose grease.4. Lubricate the U-Joint in the drive shaft every8 hours with SAE general purpose lithium ormolybdenum base grease.Gearbox, Dolly Wheel, and U-Joint LubricationTractor PTO Gearbox LubricationChecking Gearbox Oil LevelCheck the gearbox oil level every 25 hours, and ifnecessary, add oil [SAE E.P. (Extreme Pressure)90W gear lube] to maintain oil level to the FULLmark on the dipstick.IMPORTANT: DO NOT overfill the PTO gearbox toavoid oil leakage out of the dipstick standpipe.If the oil level is low, check the gearbox for any indi-cation of an oil leak. If an oil leak is noted, the gear-box will need to be removed and rebuilt.Dipstick Location, Tractor PTO GearboxChanging Gearbox OilThe tractor PTO gearbox is oil filled and vented. Noscheduled oil change is required. However, chang-ing the oil after the first 100 hour break-in periodwill extend gearbox life and is recommended.1. Remove the drain plug in the bottom of thegearcase, drain the oil, and reinstall the plug.2. Refill the gearbox through the dipstick stand-pipe using 7 to 8 fl. oz. (21 to 24 cl) of SAE E.P.(Extreme Pressure) 90W gear lube.3. Check that the oil level is at the FULL mark onthe dipstick. DO NOT overfill.Gear Axle Lubrication• The gear axle oil lubrication is SAE 80W-90 (APIGL-5) gear lube.• Check the axle oil level after every 100 hours ofoperation by removing the oil level plug. If additionaloil is needed, remove the breather vent on top of ax-le and fill until oil is at the level plug.• Change axle oil every 1000 hours or two (2)years.Dolly WheelPivotU-JointLevel PlugBelt DriveGearboxDipstickPTOGearboxJackshaft