JOSAM laser AM
Measuring system
45
Measurement of camber
When measuring camber, the axle must by level.
The wheel should be on the floor and “loaded”.
Hang the frame gauges, gauge extensions and
measuring scales.
Jack up the front axle.
Attach the wheel adapter and laser projector.
Compensate for run-out of the wheel with the
adjustment knobs on the adapter.
Attach the wheel alignment gauge AM300/301 onto
the spindle of the wheel adapter through the hole
for camber and caster measurements. Move the
wheel alignment gauge toward the locking pin.
If the floor is not flat (level) or if the wheel sizes
are different, check the position of the axle with a
spirit level AM542.
The spirit level can be hung under the axle with a
magnetic hanger, for example, AM98. Look for a
place on the axle that is machined. Do not
measure on the underside of the springs if there
are different size spring spacers between the axle
and the springs.
Adjust any unevenness by placing plates under
one wheel until the axle is level.
If the floor is flat (level), check the measurement
between the floor and the wheel hub, bead of rim
or something similar.
1 Put the wheel in a straight ahead position.
Equal values on the front and rear measuring
scales.
Lower the axle onto the floor.
2 Position the gauge vertically using the top
bubble and lock into place with the lower knob.
3 Rotate the measuring scale so that the
measuring bubble is level.
4 Read the value on the outer scale with the
arrow on the foot plate.
Write down the value on
the Test Report Sheet.
Note if it is a (+) or (-) value.
NOTE!
When measuring camber the axle must be level.
The wheel should be on the floor and “loaded”.
Measurement of front axles
Left
Right
4
1
2
3
1
3
4
2
