Zetor Major 80, Operator'S Manual, Page: 88 / 157

88
WHEEL TRACK CHANGE
G503a
CHANGE OF FRONT WHEELS TRACK WITH FRONT DRIVE AXLE
Change of wheel track is done by a change of rim and disc position.
Secure the tractor against movement first, heave the axle with a hoist and support.
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Demount front wheels.
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Unscrew nuts of screws connecting a disc with rim and protrude the screws.
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Change wheel track by setting the rim to a requested position.
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Mount the screws back with pads and lock with nuts.
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Tighten nuts with a torque of 200 - 220 Nm.
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The nut of front wheels to be tightened with a torque of 270 - 300 Nm.
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After every release of a foot joint, tighten the screws to a prescribed value.
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After travelling a distance of 100 m with an unloaded tractor, retighten the joints to a prescribed torque.
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After tractor run-in tighten the joints after 3 Mh.
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After 10 Mh retest the nuts of discs and foots of wheel rim.