Outfit; Optional Accessories; What A Wheel Aligner Is; Characteristic Angles - Corghi EXACT 7000 Manual De Uso

oUTFIT

Pedal depressor device
Steering wheel clamp device
Remote control transmitter
CD-ROM with program
Operator's Manual
Spare parts handbook
Original accessories handbook

oPTIonAL ACCEssoRIEs

For the full list of optional accessories for the
EXACT 7000 wheel aligner, refer to the "ORIGI-
NAL ACCESSORIES" handbook supplied with
the aligner. For the function enabling kits and
databank update kits, refer to your dealer's
price list.
WHAT A WHEEL ALIGnER
Is
An aligner or wheel aligner is defined as an
instrument for measuring characteristic align-
ment angles of a vehicle (see "Characteristic
Angles" section).
A wheel aligner consists of a central unit and
four sensors for application to the wheels of
the vehicle.

CHARACTERIsTIC AnGLEs

1) ROC (Run Out Compensation). Compensation
of the wheel's run out and plane error.
ROC renders the angle measurements inde-
pendent of geometrical errors in the rim and/or
wheel mounting.
This procedure should be performed on all
wheels.
2) Toe.
Angle formed by the equatorial plane of the
wheel and the axis of symmetry or axis of thrust
of the vehicle (fig. 10 and 11).
The axis of symmetry of the vehicle is the im-
aginary line which divides the vehicle in half
lengthways, while the thrust axis is the travel
direction established by the rear axle.
The units of measurement of toe are the degree
and the millimetre.
3) Camber or Inclination.
The angle formed by the equatorial plane of
Operator's Manual EXACT 7000
the wheel and the vertical plane (fig.12): cam-
ber is positive when the top of the wheel tilts
outward.
The unit of measurement of camber is the
degree.
4) Caster.
The angle formed between the vertical and the
projection of the steering axis onto the longitu-
dinal plane of the vehicle (fig.13).
Caster is measured by locking the steering to
10° or 20°.
The unit of measurement is the degree.
5) King pin.
The angle formed between the vertical and the
projection of the steering axis onto the transverse
plane of the vehicle (fig.14).
King pin is measured by locking the steering
to 10° or 20°.
The unit of measurement is the degree.
6) Steering angle difference.
The difference between the values of the steer-
ing angles of the front wheels; by convention it
is measured when the wheel on the inside of the
bend is locked to 20° (fig.15).
The unit of measurement is the degree.
7) Misalignment of wheels on the same axle
or Set-Back.
The measurement of the difference in position
of one wheel in relation to the other, referred to
the perpendicular of the vehicle's longitudinal
axis (fig.16).
There are both front set-back and rear set-back;
the latter is not to be confused with the thrust
angle.
The unit of measurement is the degree.
8) Thrust angle.
The angle formed between the axis of symmetry
of the vehicle and the travel direction of the rear
axle (fig.17).
The unit of measurement is the degree.
9) Track difference.
Angle formed by the line joining the ground
contact points of the front and rear wheels on the
left-hand side and the line joining the ground
contact points of the front and rear wheels on the
right-hand side of the vehicle (fig.18).
The units of measurement of track difference are
the degree or the millimetre, only if the wheel-
base is known.
10) Wheel-base difference.
Angle formed by the line joining the ground
contact points of the front wheels and that of
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