4
XF ENGINE BRAKE
General
95
XF series
2-8
DEB switched on
i 400174
7
6
3
2
10
1
9
4
5
8
A
B
The magnetic valve (1) is activated. Lubricating
oil can pass to the hydraulic section of the DEB.
The pressure of the lubricating oil, at least
1.5 bar, moves the control valve (2) against the
spring pressure and lifts the ball from its seat.
The high-pressure area of the DEB is now filled
with lubricating oil.
The oil causes the main piston (4) to move
down, until it rests on the set screw (9) of the
rocker (8).
4
©
0008