Walker MW 15 HP Owner's Manual

Contents

Walker MW 15 HP Owner's Manual Manual pdf 47 page image

43Maintenance Instructions REPLACING/REPAIRINGADJUSTMENTS7. Install the new gearbox on the spline coupling ofthe drive shaft. Establish correct timing of theblade drive gearboxes by setting flats on theoutput shaft at 90 degrees when connecting thegearbox(es) to the spline coupling. Make surethe timing is correct before proceeding with as-sembly.8. Reinstall the four (4) bolts mounting the gear-box to the connector tube but do not tightenthem at this time; leave connector tube bolts fin-ger-tight.9. Position the gear drive assembly on the deckand install the 3/8-16 bolts mounting the entireassembly. Leave the mount bolts finger-tight.10. Torque all the connector tube bolts to 80 in-lb(9 N⋅m); then tighten the deck mount bolts.NOTE: This fastener tightening sequencealigns the gearbox assembly with the deck hous-ing and eliminates the possibility of mounting theunitized assembly in a bind.11. Fill gearbox assembly with oil. Refer to MowerDeck Gearbox Lubrication in this section forinstructions.12. Reassemble remaining items onto deck to com-plete installation. After installing blades, checkthat the blade timing is correct by moving theblades through one (1) complete revolution.Make sure blade tips pass clear of each other.Mower Deck Gearboxes(Shown with Gearbox Cover Removed for Clarity)ADJUSTMENTSBlade Clutch (PTO)Clutch Disengagement/Brake ActionThe blade brake is activated by linkage to the clutchpulley mechanism. The brake is designed to stopthe blades within five (5) seconds after disengagingthe clutch.Use the following procedure to check and adjustclutch disengagement and brake action:1. Evenly adjust the nuts on the end of the brakeband to achieve 1/4" of travel of the PTO gear-box assembly between the engaged and thedisengaged position (refer to PTO Gearbox En-gagement Photo).PTO Gearbox Engagement(view from underside of tractor)DANGERIf the engine must be running to performa maintenance adjustment, keep hands,feet, and clothing from moving parts. DONOT wear jewelry or loose clothing.WARNINGIt is important to check and maintain bladebrake action for safe operation of the ma-chine.Brake BandAdjustment NutsLocated at Frontof Assembly(Not Visible)Assembly ShouldMove 1/4" BetweenEngaged andDisengagedPosition