X
Measure the valve clearance between the
rocker arm and valve bridge using a feeler
gauge (arrow).
It should be possible to pull
through the feeler gauge with only light
resistance.
X
Loosen counternut ; to permit adjust-
ment of the valve clearance. Adjust the
valve clearance by turning adjustment
screw :.
X
Tighten the counternut again (tightening
torque (Y page 105)).
X
Check the valve clearance again and cor-
rect.
Concluding work
X
Replace the gaskets on the cylinder head
covers.
X
Put on the cylinder head covers and tighten
them (tightening torque (Y page 105)).
X
Remove the cranking device from the fly-
wheel housing inspection hole.
X
Screw on the cap of the inspection hole of
the flywheel housing and tighten it (tight-
ening torque: 25 Nm
).
X
After fitting, run the engine and check the
cylinder head cover area for leaks.
Checking poly-V-belt for wear and
damage.
G
WARNING
Faulty poly-V-belts can tear, the belt or parts
of it could then be thrown off the engine,
thereby causing injury to others.
R
Always observe the specified maintenance
intervals for poly-V-belts.
R
If damage is detected, replace the poly-V-
belt concerned immediately.
!
If the poly-V-belt is torn, there is no drive
to
the
coolant pump and the alternator. The
engine may overheat as a result.
R
Check the poly-V-belt condition regu-
larly.
R
Replace the poly-V-belt concerned
immediately if there are any signs of
damage.
Special tool
Cranking device: 904 589 04 63 00
(Y page 64).
Checking the poly-V-belt.
X
Fit the cranking device to the flywheel
housing inspection hole. Tightening tor-
que: 25 Nm.
X
Make a chalk mark on the poly-V-belt.
X
Check the poly-V-belt for damage section
by section; to do this, turn the engine or
poly-V-belt gradually using the cranking
device until the chalk mark is reached
again.
X
Remove the cranking device.
X
Screw the cap into the inspection hole in
the flywheel housing and tighten. Tighten-
ing torque: 25 Nm.
X
Replace the poly-V-belt: (Y page 97).
Patterns of damage
!
Replace the poly-V-belts if one of the fol-
lowing damage
patterns occurs on the poly-
V-belt.
66
Work schedules
Notes on maintenance
To Next Page
Loading...
Need help?
General
