DAF LF45 Series Service Manual page 235

3
ΛΦ45/55 series
Bleeding the clutch system by operating the
clutch pedal
1. Connect a transparent pipe to the clutch
servo's bleed nipple. Insert the pipe into a jar
filled with the specified fluid. Ensure that the
pipe cannot suck in any air.
2. Open the bleed nipple.
3. Gradually depress the clutch pedal and close
the bleed nipple. Gradually release the
clutch pedal. Repeat this operation. Always
top up the clutch fluid reservoir.
4. Pump the clutch pedal again and top up the
fluid until no more air bubbles escape
through the transparent pipe.
5. Check the fluid level in the reservoir. See
"Inspection and adjustment".
Bleeding the clutch system via the clutch
servo
Note:
Sometimes it may be difficult to bleed the clutch
system. In such cases, the clutch system can
also be bled using a priming pump and the bleed
nipple on the clutch servo.
Ensure that the priming pump is thoroughly
cleaned inside.
1. Connect a transparent pipe to a priming
pump (e.g. oil can) and fill the pump with the
specified fluid.
2. Continue pumping until fluid without air
bubbles flows from the pipe.
3. Connect the pipe to the bleed nipple of the
clutch servo and open the bleed nipple.
4. Pump the fluid into the system with the
priming pump.
In doing so, observe the following:
- do not depress the clutch pedal.
- make sure that no air bubbles are
introduced into the system.
- monitor the fluid level in the priming
pump.
- monitor the fluid level in the clutch
reservoir.
©
200508
DAF LF Gearboxes and Clutch Service Manual
CLUTCH
Draining and filling
6-3
9