REAR WHEEL TRACK ADJUSTMENT
Rear wheel track adjustment is effected by changing
the wheel rim relative to the center disc, the rim and/or
the disc relative to the axle hub or by interchanging the
rear wheels.
WARNING :
A tractor with narrow wheel
settings may not be as stable under the same
conditions as a tractor with wide wheel settings. Use
the maximum width possible which is compatible with
your operation, especially on rough ground, slopes or
across ditches.
The sectional drawings shown in Figure 33 illustrate
the wheel rim and disc positions relative to the hub at
various track settings.
Each drawing represents either a left-hand wheel viewed
from the rear or a right-hand wheel viewed from the
front.
NOTE :
When interchanging left and right-hand wheel
assemblies, ensure the “V” of the tire tread remains
pointing in the direction of forward travel.
With certain options and/or tire sizes, the smaller track
settings may not be attainable due to minimal clearance
between tires and fenders or equipment.
When refitting or adjusting a wheel, tighten the bolts to
the following torques then recheck after driving the tractor
for 200 yards (200 m.) after 1 hour and 8 hours operation
and thereafter at 50 hour intervals.
Rear disc to hub nuts
200 lbf. ft.
(270 Nm)
Rear disc to rim nuts
130 lbf. ft.
(176 Nm)
WARNING: Never operate the tractor with a loose
wheel rim or disc. Always tighten nuts to the
specified torque and at the recommended intervals.
WARNING : Your tractor is equipped with lights
which meet lighting regulations when operating
or travelling on the public highway. If the wheel track
setting is adjusted beyond the initial factory position
then you may be required to reposition the lights or fix
auxiliary lighting to comply with legal requirements.
Additionally, before travelling on the highway, ensure
that the overall tractor width does not exceed the
maximum permitted in your country.
TRACTOR WEIGHING
For maximum performance in heavy draft conditions
weight should be added to the tractor in the form of
liquid ballast, cast iron weights or a combination of both.
Front end ballast may be required for stability and
steering control when weight is transferred from the front
to the rear wheels as the implement is raised by the
tractor three-point linkage.
As a general guide, tractors should be ballasted so that
approximately one third of the total tractor weight (less
implement) is on the front wheels.
20
CONTROL, INSTRUMENTS AND OPERATION
33.
Rear Wheel Track Setting
Disc/Rim Position
Track Width
48 in.
(122 cm.)
52 in.
(132 cm.)
56 in.
(142 cm.)
60 in.
(152 cm.)
64 in.
(163 cm.)
68 in.
(173 cm.)
72 in.
(183 cm.)
76 in.
(193 cm.)
