DAF CF85 Series - 6. CLUTCH; 6.1 FAULT-FINDING TABLE

3
CF65/75/85 series Clutch
DIAGNOSTICS
6-1
6. CLUTCH
6.1 FAULT-FINDING TABLE
SYMPTOM: CLUTCH PEDAL FAILS TO RETURN
Possible cause Remedy
Broken pedal return spring Replace spring
Worn clutch pedal bearing Check bearing and replace, if necessary
Dirt in hydraulic system Clean system and fill with fresh fluid
Incorrect fluid in hydraulic system Replace with fluid of correct specification
Air in hydraulic system Bleed the system
SYMPTOM: CLUTCH PEDAL STICKS WHEN PRESSED
Possible cause Remedy
Leak in hydraulic system Check system
Air in hydraulic system Bleed hydraulic system
Release bearing incorrectly fitted Fit the release bearing correctly
Fork hinge points or fork itself worn Check hinge points and fork; replace if
necessary
Defective clutch servo Repair and/or replace clutch servo
Gearbox front cover worn or broken Check, replace gearbox front cover
SYMPTOM: PEDAL FORCE TOO HIGH
Possible cause Remedy
No or insufficient pressure in circuit 4 of the
brake system
Check circuit 4 of the brake system
Kinked air pipe Check pipe and replace, if necessary
Kinked hydraulic pipe Check pipe and replace, if necessary
Worn clutch pedal bearing Check bearing and replace, if necessary
Defective clutch servo and/or main cylinder Repair or replace clutch servo and/or main
cylinder
Note: In the case of a swollen seal, clean the
system and re-fill with new fluid.
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ᓻ 200337
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