DAF CF65, CF75, CF85 Series . Manual - part 55

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System inspection with DAVIE XD

ECAS-3

DAVIE XD diagnostics manual 

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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

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System inspection with DAVIE XD

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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.

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Contents

AGS

DAVIE XD diagnostics manual 

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14 AGS

CONTENTS

Page

Date

1.

1.2

1.3

2.

2.2

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Contents

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DAVIE XD diagnostics manual