GENERAL
M8540Narrow, M9540Narrow, WSM
NG-48
[2] TREAD ADJUSTMENT
• When working on slopes or when working with trailer, set the wheel tread as wide as practical for
maximum stability.
• Support tractor securely on stands before removing a wheel.
• Do not work under any hydraulically supported devices. They can settle, suddenly leak down, or be
accidentally lowered. If necessary to work under tractor or any machine elements for servicing or
adjustment, securely support them with stands or suitable blocking beforehand.
• Never operate tractor with a loose rim, wheel, or axle.
9Y1210236GEG0073US0
(1) Front Wheels
Front tread width can be adjusted as shown with the standard
equipped tires.
To change the tread width
1. Remove the wheel rim and disc mounting bolts.
2. Change the position of the rim and disc (right and left) to the
desired position, and tighten the bolts.
3. Adjust the toe-in. (Refer to "[5] CHECK POINTS OF EVERY 200
HOURS" at "7. CHECK AND MAINTENANCE" in this section.)
• Always attach wheels as shown in the figure.
• If not attached as illustrated, transmission parts may be
damaged.
• When re-fitting or adjusting a wheel, tighten the bolts to the
following torques then recheck after driving the tractor
200 m (200 yards) and thereafter according to service
interval. (Refer to "[5] CHECK POINTS OF EVERY 50
HOURS" at "7. CHECK AND MAINTENANCE" in this
section.)
(To be continued)
Toe-in Factory specification
2.0 to 8.0 mm
0.08 to 0.31 in.
Tightening
torque
Front wheel mounting
nut
M16
259.9 to 304.0 N·m
26.5 to 31.0 kgf·m
191.7 to 224.2 lbf·ft
(1) Front Wheel Mounting Nut [A] ROPS Model
[B] CABIN Model
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