The tractor front wheels have a certain angle in
the lateral and back-and-forth direction for easy
steering performance; reliability, safety, stability
and linearity of motion; and reduction of tire
wearing.
This is called "front wheel alignment" and
includes the following 4 factors:
(1) Camber angle, a: 2°
(2) Caster angle, b: 0°
(3) Kingpin tilt, c: 12°
(4) Toe-in, B-A: 4-8 mm
(5) Traveling direction
These factors are shown below:
Adjusting the toe-in
If the steering response is irregular or subject to
vibration, check the toe-in. Toe-in is the
arrangement in which the front wheels are
oriented slightly inward so that the distance
between the front edges of the wheels (A) is
slightly smaller than the distance between the
rear edges (B). The toe-in (difference) should be
4-8 mm. If it is not within this range, adjust the
toe-in as described below:
(1) Loosen the locknuts at the ends of the tie
rod.
(2) Turn tie rod A until the toe-in is 4-8 mm.
(3) When the toe-in is 4-8 mm, tighten the
locknuts.
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