Exmark 000 & higher Wheel Hub - Slotted Nut Torque Specification, Every 500 hours thereafter

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

When tightening the slotted nut on the wheel motor tapered shaft:

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 25
1. 0.1 inch max	2. No more than two
	threads (0.1 inch max)
	should be showing here.

4.If more than two threads (0.1 inch) are showing remove nut and install washer (P/N 1-523157) between hub and nut.

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

6.Then tighten nut until the next set of slots line up with the cross hole in shaft. Do Not loosen nut to align the slot. If required, tighten to the next set of slots.

7.Install new cotter pin (P/N 1-806800).

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

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