77066
TRAKRITE CAMBER GAUGE
Measures the Camber and Caster angle on the wheel hub or brake disc and
allows adjustment to maintain correct wheel alignment and even tyre wear.
Calibration
To ensure the magnetic gauge is calibrated correctly to read absolute level, use
a spirit level to level the transverse bubble and clamp the gauge onto a known
vertical service (metal is helpful).
Adjust the knob at the rear to centre the bubble on the Zero position.
NB Any adjustments made to Camber or Caster angle may affect the other so
always re-check a final time.
For this check you will need to ensure the
Camber Angle – Wheels on
vehicle is parked on a flat surface, all of the
tyres are inflated to the correct pressure, the
rear wheels are made secure and wheel trims
removed.
1. Use a straight bar vertical across the flats of
2. Place the Trakrite Camber Gauge in the
3. Record this angle and repeat the procedure
NB If the gauge indicates an unusually large
angle, it may be necessary to check again with
a full fuel tank and with a normal load.
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the wheel making sure nothing impedes the
flat surface (there may be enough flat surface
to attach the gauge directly to the wheel)
centre of the bar and read
the – Neg. or + Pos. angle.
on the opposite wheel.
Camber Angle – Wheels Off
Using this method you must ensure that the car body is equal distance off of the
ground and the wishbone is jacked up to replicate the running position.
Also make sure the wheels
are facing directly ahead.
Using the horizontal level,
connect the gauge to the
Brake Discs and read the
angle.
Repeat for the other hub.
The Caster angle is the angle between the
Caster Angle
vertical and the inclination of the king pin when
viewed from the side of the wheel
To measure this angle the wheels must be on the
vehicle If a turntable is not available it may be
useful to mark out the angles on the workshop
floor.
Start with a straight line and mark 2 diagonal
lines at 20˚ (40˚ total).
1. Turn the steering 20˚ to the right.
2. Set the measurement of the off-side wheel by
attaching the gauge to a level surface, making
sure the horizontal bubble is level, at 90˚ to the
wheel spindle and adjust the bubble so that it
is directly over the Zero mark.
3. Now turn the wheels 40˚ to the left (through
the straight line if turntable is not available)
and attach the gauge to the near side wheel
as before.
4. The measurement reading is the Caster angle.
Negative caster is when the steering axis is
inclined toward the front of the vehicle and
positive caster is achieved when the steering
axis is inclined toward the rear of the vehicle.
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