DAF CF75 Series - Page 84

3
DIAGNOSTICS
AS Tronic CF65/75/85 series
9-2
SYMPTOM: AIR SUPPLY PRESSURE TOO HIGH
Possible cause Remedy
- Defective or incorrectly functioning pressure
regulator on modulator
- Pressure regulator factory setting disrupted
- Check pressure regulator set screw seal
(underside of pressure regulator under plastic
cover)
- Replace pressure regulator
SYMPTOM: SYSTEM NOT AVAILABLE ONCE ENGINE STARTED
Possible cause Remedy
During the system self-test clutch conditions
cannot be stored due to:
- jammed clutch plate on gearbox input shaft
- clutch valves in clutch unit mechanically
locked in open or closed position
Check whether clutch is released during self-test.
- Remove inspection cover from clutch and
check whether clutch operating unit changes
position during self-test
- If necessary replace the clutch unit
- If necessary remove the gearbox so as to
check the clutch parts
SYMPTOM: GEAR IS NOT ENGAGED WHEN OPERATING UNIT HAS BEEN SWITCHED ON VIA
SELECTOR SWITCH
Possible cause Remedy
Signal of selected driving position from selector
switch not received by gear lever unit
Check whether the wire from the relevant
selector switch driving position to the gear lever
unit is interrupted.
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ᓻ 200337
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