49
5.7. Wheels.
5.7.1. Front wheel track adjustment.
Non driven front axle
Front extension axles enable to set front wheel track in range of 1230
1930 mm.
To adjust the front wheel track, proceed as follows:
apply the parking brake,
chock the rear wheels and raise the front of the tractor so that wheels are clear of the ground,
unscrew the nuts and remove the bolts 1 (Fig. 5.7.1) securing the left and right hand axle arms to
the axle beam,
unscrew the nuts and remove the bolts 4 (Fig. 5.6.5) retaining the track rod center sleeve from
either side,
reset the left and right hand axle arms passing the securing bolts through the axle beam and the
axle arms as indicated in Fig. 5.7.1 and in the track setting table,
refit and tighten the retaining bolts 4 (Fig. 5.6.5),
tighten the axle arm securing bolts to 160Nm,
check the toe-in and adjust, if necessary.
1460 mm
1760 mm
1660 mm
1560 mm
1860 mm
1460 mm 1560mm 1660mm 1760mm 1860mm
Fig. 5.7.1. Front wheel track adjustment –
possible positions of axle arm.
1 - Securing bolts. 2 - Axle beam.
3 - Axle arm. A
H – adjusting openings.
Fig. 5.7.2. Front drive axle wheel track
Front drive axle
The different track widths are obtained by altering the position of the rim in relation to the disc and/or
of the disc in relation to the reduction unit flange as well as by reversing the wheels and
interchanging them.
NOTE:
If the wheels are reversed, they must be transferred to the opposite side of the tractor so as to
maintain the correct tyre tread direction.
NOTE:
After wheel tracks change check the front wheel nuts tightening and adjust front wheel
toe-in.
When refitting or adjusting front wheel, tighten the nuts/bolts progressively to the following torque:
rim to disc
–
144 Nm,
disc to axle hub
–
300
360 Nm
.
5.7.2. Front wheels toe-in.
Toe-in measurement and adjustment .
Check and adjust the front wheel toe-in every 600 hours of operation and after every change in the
track setting and when excessive tyre wear is noticed.
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