Most Commonly Encountered Vehicle Alignment Faults - ATH-Heinl ATH LUX 3D Bedienungsanleitung

MOST COMMONLY
ENCOUNTERED VEHICLE
ALIGNMENT FAULTS
Vehicle tends to wander to the left or
the right.
Cause: tyre side slip.
Servicing: Invert the position of the
wheels on the same axle:
• if movement is inverted, turn one of
the two wheels where the position has
been inverted, on its rim.
• if the movement is not inverted, turn
the position of the wheels on the other
axle
• if this double inversion procedure fails
to solve the problem, check that camber
values on the same axle are identical.
Carry out the same comparison for caster
values.
Steering wheel not aligned with vehicle
path
The causes may be:
• mechanical backlash.
• ROC has been skipped
incorrectly.
• wheel alignment performed with the
steering wheel off-centre.
• front wheels adjusted with respect to
the axis of symmetry instead of the
thrust axis.
Disparity between steering locks.
• The steering box range must be
centered by counting the number of
steering wheel revolutions from full
lock to full lock.
• Position the steering wheel in the center
of its range and perform the normal
procedure for adjustment of the front
half-toe values.
• Position the steering wheels correctly,
disassembling it from the steering
column.
or performed
Steering wheel is excessively stiff with
vehicle stopped.
The causes may be:
• excessive caster.
• incorrect king pin angle.
• excessive camber.
• low tyre pressure.
Steering wheel return is too low or too
forceful when driving.
Incorrect caster value – adjust.
Tyre wear.
• tyres with irregular wear on both
sides:incorrect pressure
ed.
• tyre with irregular wear in the centre
of the thread: incorrect pressure - over-
inflated.
• tyre wear with stepped profile: shock
absorber not working properly.
• tyres on the same axle with irregular
wear on a single wall: toe values are
out of tolerance.
• only one tyre on the same axle with an
irregularly worn side: camber values are
out of tolerance.
Vehicles with just one register.
• Adjust total toe to the manufacturer's
specifications.
• Set the left and right front toe values
so that they are identical.
• Remove the steering wheel from the
steering column and move it to the
correct position. If the steering wheel
has adjustment slots, use them.
Adjusting vehicle with power steering.
• Before making any adjustments start the
engine, turn the steering wheel to full
lock in both directions, position it in the
center of its turning range and block it.
• With the exception of vehicles for which
manufacturer specifications indicate
adjustment with the engine running
only, the engine can be switched off or
left running during adjustments, as
‑ ‑
under inflat
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