Ford Tractor 600 Series Owner's Manual page 25

NOTE: When front wheel adjustments are made, the drag links must
be adjusted to obtain proper front wheel toe-in. See page 46, under
MAINTENANCE.
The tractor rear wheels are adjustable
to the same tread widths as the front wheels. Tread width settings are
made by changing the position of the steel discs and the rims to any
of the positions shown in Figure 18. To change from the 52 inch
INTER-CHANGING REAR WHEEL ASSEMBLIES GIVE THESE COMBINATIONS
REPOSITION REPOSITION REPOSITION
RIM ON DISC RIM ON DISC RIM ON DISC
RIM REPOSITIONED RIM REPOSITIONED
ON OPPOSITE DISC ON OPPOSITE DISC
Figure 18
Rear Wheel Tread Adjustments
23