Setting work
Service and maintenance
© 2007
59
6
Check/set control piston clearance for
the engine brake
z
after valve clearance has ben set.
–
Control unit for the engine brake has already
been mounted.
z
Turn the engine until reaching valve overlap, cyl-
inder no. 1
z
Carry out control piston clearance for every out-
let valve.
z
Further procedure similar to that for the valve
clearance.
Note:
z
Valve overlap means:
z
Outlet valve is not yet closed, inlet valve begins
to open, see valve-setting schematic.
z
If necessary, set control piston clearance, for
this:
z
Loosen locking nut (2).
z
Mount the control piston clearance X on the set-
ting screw (1) in EX (
55
) using the setting de-
vice and set as follows:
–
Fix magnet
–
Then, turn back at an angle of 432° (manual-
ly or using a torque wrench):
–
Turn the setting device until the control pis-
ton reaches the valve bridge without clear-
ance; set scale to "0".
EX
= outlet valve at 432° for M8 thread (corre-
sponds to 1.5 mm clearance)
–
Tighten locking nut (2).
z
Check and adjust valve clearance on all remain-
ing cylinders.
z
Reinstall cylinder head cover, with new gasket.
z
Swing breather valve into position and fasten.
EX = outlet valve
1
Setting screw for valve clearance
2
Locking nut
3
Solenoid valve (electronic control)
4
Control board
OBJ_DOKU-12638-001.fm Seite 59 Mittwoch, 22. August 2007 9:25 09
