Exmark 850 Wheel Hub Slotted Nut Torque Specification, Style a black finish, Style B yellow zinc

Page 36

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

See Figure 25 to determine which slotted nut has been installed on the unit.

Figure 25

1.

Style A (black finish)

3.

Style B (yellow zinc)

2.

.03 inch (.76 mm)

4.

.24 inch (6 mm)

Style A (black finish):

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

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

Style B (yellow zinc):

1.Remove and discard the cotter pin.

2.Torque the slotted nut to 200 ft-lb (271 N-m).

3.Check distance from bottom of slot in nut to inside edge of hole. Two threads (0.1 inch) or less should be showing.

 

Figure 26

1. 0.1 inch max

2. No more than two

 

threads (0.1 inch max)

 

should be showing here.

 

 

36

Image 36
Contents Lazer Z Advantage Series Models California Introduction Contents Safety Safety Alert SymbolSafe Operating Practices TrainingSafety Operation Slope OperationUsing the Rollover Protection System Rops Maintenance and Storage Safety Safety and Instructional Decals 109-3148 109-7232 109-8483 Message Display Specifications Model NumbersSystems Seat Hydrostatic Ground Drive SystemTires & Wheels Cutting DeckDimensions Torque RequirementsProduct Overview Operation ControlsIgnition Switch Hour MeterFuel Shut-Off Valve Fuel GaugePTO Engagement Switch Low Voltage IndicatorDrive Wheel Release Valves Deck Lift PedalPre-Start Operating InstructionsRaise the Rollover Protection System Rops Open the Fuel Shut-Off Valve Starting the EngineEngaging the PTO Disengaging the PTOStopping the Engine Driving the MachineDriving Forward Adjusting the Cutting Height Adjusting the Deck Lift Foot PedalAdjusting the Anti-Scalp Rollers Driving in ReverseTransporting Transporting a UnitDo Not drive a unit on a public street or roadway Loading a Unit 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 Safety Interlock System Check Mower BladesService Air Cleaner Check Rollover Protections Systems Roll Bar KnobsCheck Seat Belt Check for Loose HardwareCheck Hydraulic Oil Level Change Engine OilCheck Tire Pressures Check Condition Of Belts Lubricate Grease FittingsLubricate Caster Wheel Hubs Lubricate Brake Handle Pivot Lubricate Deck Lift PivotCheck Spark Plugs Change Fuel FilterWheel Hub Slotted Nut Torque Specification Style a black finishStyle B yellow zinc Check Spark Arrester if equipped Thread Locking AdhesivesCopper-Based Anti-seize Dielectric GreaseAdjustments Deck LevelingAdjusting the Parking Brake Pump Drive Belt TensionDeck Belt Tension Left Hand Brake Shown Electric Clutch Adjustment Removing the ShimShim Motion Control Linkage Adjustment Motion Control Damper Adjustment Motion Control Handle AdjustmentMotion Control Neutral Lock Pivot Adjustment Adjusting the heightMotion Control Full Forward Tracking Adjustment Caster Pivot Bearings Pre-Load AdjustmentClean Engine and Exhaust System Area Clean Debris From MachineClean Grass Build-Up Under Deck Remove Engine Shrouds and Clean Cooling FinsBattery Disposal Troubleshooting Problem Possible Cause Corrective ActionSee Drive Wheel Release Valves section Troubleshooting Schematics Electrical DiagramSchematic ElectricalHydraulic Diagram Lazer Z Advantage Series Turf Equipment Page 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
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0, 850 specifications

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