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Drive System
Maintenance
Torquing the Wheel Lug
Nuts
Service Interval: After the first hour
After the first 10 hours
Every 200 hours
Wheel lug nut torque specification: 85 to 90 N∙m
(62 to 66 ft-lb)
Torque the lug nuts at the front and rear wheels
in a crossing pattern as shown in
specified torque.
Figure 82
Maintaining the Rear Wheel
Alignment
Checking the Rear Wheel
Alignment
Service Interval: Every 200 hours
1.
Park the machine on a level surface.
2.
Disengage the PTO, lower the mower deck, and
engage the parking brake.
3.
Shut off the engine and remove the key.
4.
Rotate the steering wheel so that the rear
wheels are straight ahead.
5.
Measure the center-to-center distance at wheel
hub height, in front and in back of the rear tires.
Note:
The rear wheels should not toe-in or
toe-out when they are aligned correctly.
6.
If the wheels toe-in or toe-out, align the wheels;
refer to
Adjusting the Rear Wheel Toe-In (page
61).
Figure 82
to the
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61
Adjusting the Rear Wheel Toe-In
1.
Loosen the jam nuts at both ends of the left and
right tie rods.
2.
Adjust both tie rods until center-to-center
distance at front and back of rear wheels is the
same
(Figure
83).
3.
When rear wheels are adjusted correctly, tighten
jam nuts against tie rods.
Figure 83
1. Steering plate
Adjusting Steering Stops
The rear-axle-steering stops help prevent over-travel
of the steering cylinder in case of impact on the rear
wheels. Adjust the stops so that there is 0.23 cm
(0.090 inch) clearance between the bolt head and the
knuckle on the axle when you turn the steering wheel
completely to the left or to the right.
Thread the bolts in or out until you attain a clearance
of 0.23 cm (0.090 inch); refer to
Figure 84
1. Steering stop (right side shown)
g217458
2. Same dimension at front
and rear of wheels
Figure
84.
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