DAF CF65 Series Service Manual page 337

4
CF65/75/85 series
Disengaging the DEB
1
The solenoid valve (1) is no longer activated. The
spring pressure moves the control valve (2)
downwards, as the oil pressure under the control
valve (2) flows back into the engine through a
hole in the solenoid valve (1).
The oil from the high-pressure area of the DEB
can now escape through a cleared opening
above the control valve (2).
This is effected by the main piston (4) being
moved up by the rocker.
The spring plate (5) holds the main piston (4) in
its top position.
Hydraulic control of the exhaust valves
To open an exhaust valve hydraulically at the end
of a compression stroke, optimum use is made of
the valve diagram.
This means that the DEB uses an exhaust valve
rocker of one cylinder to open an exhaust valve
for another cylinder.
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