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If there is damage or wear:
-
Replace the timing chain guide rail.
-
Check the timing chain securing guide
If there is damage or wear:
-
Replace the timing chain securing guide.
0
-
Check timing chain
for damage and wear.
If there is damage or wear:
-
Replace the timing chain.
-
Check the timing chain links for smooth operation. Let the timing chain hang down freely.
»
The chain links no longer align in a straight line:
-
Replace the timing chain.
18.4.24
Removing the rocker arm
-•
18.4.25
Removing the valves
C,
for damage and wear.
-
Remove screws
-
Remove plugs
308885-10
-
Screw appropriate screw
out rocker arm shafts
-
Take off rocker arm 0).
308886-10
-
Take the shims out of the valve spring retainers and lay them
to one side according to their normal built-in position.
-
Pretension the valve springs using the special tool.
Valve spring mounter (59029019000)
Insert for valve spring lever (77029041200)
-
Remove valve keys
308887-10
O
8
and
of the rocker arm shafts.
@)
with the O-rings.
C,
into the rocker arm shafts. Pull
0.
(�
p. 314)
O
and relax the valve springs.
18 ENGINE
..
(�
p. 318)
191
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