DAF LF45, LF55 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

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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.

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Contents

AGS

DAVIE XD diagnostics manual

14

14 AGS

CONTENTS

Page

Date

1.

1.2

1.3

2.

2.2

AGS

2

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Contents

14

DAVIE XD diagnostics manual