Tread Settings—Multi-Position Rear Wheels (Steel Disks)

Wheel tread on rear axle with multi-position wheels can be adjusted by repositioning or exchanging the rims or by reversing the wheel disks.

Wheel tread can also be adjusted by exchanging the complete wheel to the opposite side of the tractor. (This maneuver permits the change from disk dished-in to disk dished-out operations without disassembling the wheel.) When changing rear wheels from one side to the other, the arrow on side wall of tire should point in the direction of forward rotation.

The relationship of the wheel disk and rim in obtaining the different tread settings is shown in the following diagrams.

A study of these diagrams before attempting to change tread settings will save unnecessary labor.

LX012555-UN-27JUN96

IMPORTANT: After setting wheel spacing, tighten rim-to-disk and disk-to-flange bolts. Drive tractor 100 m (109 yd) and tighten again.

Item	Measurement	Specification
Multi-Position Rear Wheels Rim-to-Disk Bolts (Steel Disk)	Torque	245 N˙m (180 lb-ft)
Multi-Position Rear Wheels Disk-to-Flange Bolts (Steel Disk)	Torque	175 N˙m (130 lb-ft)

	TREAD WIDTH Centerline-to-Centerline
Tire Sizes	A	B	C	D	E	F	G
460/85 R34	N/A	1500 mm (59.0 in.)	1592 mm (62.7 in.)	1734 mm (68.3 in.)	1834 mm (72.2 in.)	1892 mm (74.5 in.)	1992 mm (78.4 in.)
460/85 R38	N/A	1513 mm (59.6 in.)	1617 mm (63.7 in.)	1713 mm (67.4 in.)	1817 mm (71.5 in.)	1913 mm (75.3 in.)	2017 mm (79.4 in.)
420/85 R38	N/A	1487 mm (58.5 in.)	1591 mm (62.6 in.)	1739 mm (68.4 in.)	1843 mm (72.5 in.)	1887 mm (74.3 in.)	1991 mm (78.4 in.)