Exmark 4500-507 manual Shim

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Maintenance

4.Verify that 12V is present at the clutch connector when the PTO switch is engaged.

5.Measure the gap between the rotor and armature. If the gap is greater than .04 inch (1 mm), proceed with the following steps:

A.Loosen both brake mounting bolts one-half to one full turn as shown below.

Note: Do Not remove the brake pole from the field shell/armature. The brake pole has worn to match the armature and needs to continue to match after the shim is removed to ensure proper brake torque.

Figure 40

1.Brake mounting bolt

B.Using needle nose pliers, or by hand, take hold of the tab and remove the shim (Do Not discard the shim until proper clutch function has been confirmed).

Figure 41

1.Shim

C.Using a pneumatic line, blow out any debris from under the brake pole and around the brake spacers.

D.Re-torque each bolt (M6 x 1) to 10 ft-lb (13 N-m) +/-0.5 ft-lb (0.7 N-m).

E.Using a 0.010 inch thick feeler gauge, verify that a gap is present between the rotor and armature face on both sides of the brake pole as shown. (Due to the way the rotor and armature faces wear (peaks and valleys) it is sometimes difficult to measure the true gap.)

Figure 42

1.Feeler gauge

Figure 43

1.Feeler gauge

If the gap is less than 0.010 inch, then reinstall the shim and reference the Troubleshooting section.

If the gap is sufficient, proceed to the safety check in step F.

F.Perform the following safety check:

a.Sit on the seat and start the engine.

b.Make sure the blades Do Not engage with the PTO switch “off ” and the clutch disengaged.

If the clutch does not disengage, reinstall the shim and reference the Troubleshooting section.

c.Engage and disengage the PTO switch ten consecutive times to ensure the clutch is functioning properly. If the clutch does not engage properly, reference the Troubleshooting section.

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Contents Lazer Z Models California Introduction Contents Safety Safety Alert SymbolSafe Operating Practices TrainingSafety Operation Using the Rollover Protection System Rops Slope OperationMaintenance and Storage Safety Safety and Instructional Decals 109-3148 109-7232 109-8483 117-2718 116-0211 Message Display Systems SpecificationsModel Numbers Tires & Wheels SeatHydrostatic Ground Drive System Dimensions Cutting DeckOverall Width Overall LengthCurb Weight Accessory Weight Table WorksheetTread Width Center to Center of Tires, Widthwise Wheel Base Center of Caster Tire to Center of Drive TireProduct Overview Torque RequirementsOperation ControlsIgnition Switch Hour MeterFuel Shut-Off Valve Fuel GaugePTO Engagement Switch Low Voltage IndicatorDrive Wheel Release Valves Deck Lift PedalRaise the Rollover Protection System Rops Pre-StartOperating Instructions Open the Fuel Shut-Off Valve Starting the EngineEngaging the PTO Disengaging the PTOAdjusting the Cutting Height Driving the MachineTransporting a Unit Adjusting the Anti-Scalp RollersTransporting Loading a Unit Maintenance Recommended Maintenance SchedulesCheck Battery Charge Check Engine Oil LevelCheck Safety Interlock System Check Mower BladesService Air Cleaner Check Rollover Protections Systems Roll Bar KnobsCheck Seat Belt Check for Loose HardwareCheck Tire Pressures Change Engine OilCheck Hydraulic Oil Level Lubricate Caster Wheel Hubs Check Condition Of BeltsLubricate Grease Fittings Lubricate Brake Handle Pivot Lubricate Deck Lift PivotCheck Spark Plugs Change Fuel FilterWheel Hub Slotted Nut Torque Specification Check Spark Arrester if equippedThread Locking Adhesives Copper-Based Anti-seizeDielectric Grease Deck LevelingFoot lever Transport lock Cut of height pin Deck Removal Deck Belt Tension Adjusting the Parking BrakePump Drive Belt Tension Electric Clutch Adjustment Motion Control Linkage AdjustmentMotion Control Damper Adjustment RH Motion Control ShownMotion Control Neutral Lock Pivot Adjustment Motion Control Handle AdjustmentCaster Pivot Bearings Pre-Load Adjustment Clutch ShimShim Clean Engine and Exhaust System Area Remove Engine Shrouds and Clean Cooling FinsClean Hydro Fan Cooling Guards Clean Debris From MachineMotor Oil Disposal Battery DisposalWaste Disposal Troubleshooting Problem Possible Cause Corrective ActionSee Drive Wheel Release Valves section Troubleshooting Schematics Electrical DiagramSchematic ElectricalHydraulic Diagram Exmark Lazer Z and Lazer Z AS Turf Equipment Page Page See EXMARK’S Complete Line of Accessories and Options