DAF CF65, CF75, CF85 Series . Manual — part 55
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3-1
System inspection with DAVIE XD
ECAS-3
DAVIE XD diagnostics manual
13
3. SYSTEM INSPECTION WITH DAVIE XD
3.1 CALIBRATING THE SENSORS
The sensors must be calibrated if the height
sensors or the ECAS unit are replaced.
Note:
Calibration should be carried out with due care to
avoid physical injury and material damage.
When calibrating, the maximum desired chassis
height at the rear axle and the maximum desired
chassis height at the front axle must be
calibrated.
Notes to sensor calibration
1.
Place the gauges between the driven axle
and the chassis.
2.
Lower the chassis using DAVIE until it rests
on the gauges.
Note:
-
On vehicles with an air-sprung front axle
a gauge must also be placed between
the axle and the chassis.
3.
Now bring the chassis to the desired
maximum height at the front axle.
Then bring the chassis to the desired
maximum height at the rear axle.
Note:
The maximum height of the chassis is limited
by the mechanical stop of the shock
absorber.
The shock absorber of the non-driven axle
may reach its stop before the shock absorber
of the driven axle.
ECAS-3
3-2
©
System inspection with DAVIE XD
13
DAVIE XD diagnostics manual
3.2 INSPECTION OF HEIGHT SENSORS
1.
Admit air to the bellows. The value indicated
by DAVIE must now show a linear increase.
2.
Exhaust air from the bellows. The value
indicated by DAVIE must now show a linear
decrease.
Note:
If two height sensors are used, these two
sensors, with the vehicle at the driving level, may
give a different reading (caused, for example, by
play in the linkage). This may result in the vehicle
not being level. This can be solved by
recalibrating the sensors.
AGS
2
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Contents
14
DAVIE XD diagnostics manual
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