Exmark 4500-645 manual Wheel Hub Slotted Nut Torque Specification, Thread Locking Adhesives

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Maintenance

CAUTION

Raising the mower deck for service or maintenance relying solely on mechanical or hydraulic jacks could be dangerous. The mechanical or hydraulic jacks may not be enough support or may malfunction allowing the unit to fall, which could cause injury.

Do Not rely solely on mechanical or hydraulic jacks for support. Use adequate jack stands or equivalent support.

3.Remove the pump drive belt.

4.Place a catch pan under the hydro.

5.Carefully clean area around the filters. It is important that no dirt or contamination enter the hydraulic system.

6.Using a socket, unscrew filters to remove and allow oil to drain.

7.Before installing the new filters, apply a thin coat of Exmark Premium Hydro oil on the surface of the two rubber seals.

8.Install the new filters and torque to 14 ft-lb (19 N-m).

9.Fill the hydraulic system as stated in Check Hydraulic Oil Level section.

Exmark Premium Hydro Oil is recommended. Refer to the chart for an acceptable alternative:

Hydro Oil

Change Interval

 

 

Exmark Premium Hydro

500 Hours

Oil (Preferred)

 

Mobil 1 15W50

250 Hours

10.Remove the catch pan and properly dispose of hydro oil and filter according to local codes.

11.Re-install the pump drive belt.

12.Start engine and move throttle control ahead to full throttle position. Move the speed control levers to the full speed and run for one minute. Shut down the machine, allow the hydros to cool and recheck oil level.

13.Remove the jack stands.

Note: Do Not change the hydraulic system oil (except for what can be drained when changing filter), unless it is felt the oil has been contaminated or been extremely hot.

Changing oil unnecessarily could damage hydraulic system by introducing contaminants into the system.

Wheel Hub - Slotted Nut Torque Specification

Service Interval: After the first 100 hours

Every 500 hours thereafter

Torque the slotted nut to 211-260 ft-lb (286-352 N-m).

Note: Do Not use anti-seize on wheel hub.

Thread Locking Adhesives

Thread locking adhesives such as “Loctite 242” or “Fel-Pro, Pro-Lock Nut Type” are used on the following fasteners:

ROPS spring pin housing.

Hydro pump control arm, linkage bolt, and attachment bolt.

Hydro cooling fan screw.

Hydro park brake cable anchor mounting bolt

Sheave and clutch retaining bolt in the end of engine crankshaft.

Thread locking adhesives are required for some hardware on engines — see the Engine manual.

Copper-Based Anti-seize

Copper-based anti-seize is used in the following location:

On threads of Blade Bolts. See Check Mower Blades section.

Dielectric Grease

Dielectric grease is used on all blade type electrical connections to prevent corrosion and loss of contact.

LPG Regulator

No adjustments necessary. If the engine is not running properly, contact an Authorized Service Dealer

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Contents Lazer Z LPG Models All Rights Reserved Introduction Contents Safe Operating Practices SafetySafety Alert Symbol TrainingDo Not change the tanks when the engine is running Inspection Weekly OperationWith each tank change Tank RequalificationSlope Operation Using the Rollover Protection System Rops Maintenance and Storage Safety Safety and Instructional Decals 109-3148 109-7232 116-0157 116-0752 109-7069 109-9906 Specifications Model NumbersSystems Seat Hydrostatic Ground Drive SystemDimensions Tread Width Center to Center of Tires, Widthwise Curb WeightAccessory Weight Table Worksheet Wheel Base Center of Caster Tire to Center of Drive TireProduct Overview Torque RequirementsMotion Control Levers OperationControls Brake LeverHour Meter Ignition SwitchSafety Pressure Relief Valve Fuel ValveLPG Cylinder Brackets PTO Engagement SwitchLow Voltage Indicator Drive Wheel Release ValvesPre-Start Operating InstructionsRaise the Rollover Protection System Rops Engaging the PTO Open the Fuel ValveStarting the Engine Disengaging the PTODriving the Machine Driving ForwardAdjusting the Cutting Height Adjusting the Anti-Scalp RollersDriving in Reverse Transporting Transporting a UnitDo Not drive a unit on a public street or roadway Loading a Unit Operation Maintenance Recommended Maintenance SchedulesCheck Battery Charge Check Engine Oil LevelProposition 65 Warning Recommended Jump Starting Procedure Do Not jump start a weak battery if these conditions existCheck Mower Blades Check Safety Interlock System Check Rollover Protections Systems Roll Bar KnobsCheck for Loose Hardware Service Air CleanerCheck Seat Belt Change Engine OilLubricate Grease Fittings Check Tire PressuresCheck Condition Of Belts Lubricate Caster Wheel HubsCheck Spark Plugs Lubricate Brake Handle PivotLubricate Deck Lift Pivot Check LPG TankChange LPG Tank Change Hydraulic System Filter and FluidCopper-Based Anti-seize Wheel Hub Slotted Nut Torque SpecificationThread Locking Adhesives Dielectric GreaseAdjustments Deck LevelingPump Drive Belt Tension Adjusting the Parking Brake Deck Belt TensionElectric Clutch Adjustment Removing the Shim Motion Control Linkage Adjustment Motion Control Handle Adjustment Motion Control Damper AdjustmentMotion Control Neutral Lock Pivot Adjustment Adjusting the heightCaster Pivot Bearings Pre-Load Adjustment Adjusting the TiltClean Hydro Fan Cooling Fins Clean Engine and Exhaust System AreaRemove Engine Shrouds and Clean Cooling Fins Clean Debris From MachineBattery Disposal Waste DisposalMotor Oil Disposal Troubleshooting Problem Possible Cause Corrective ActionSee Drive Wheel Release Valves section Troubleshooting Schematics DiagramSchematic ElectricalHydraulic Diagram General Warranty Conditions and Products Covered Page Service Record Date Description of Work Done Service Done ByPage This page may be copied for personal use See EXMARK’S Complete Line of Accessories and Options