17 ENGINE
310433-10
17.4.20 valves, removing
310434-10
196
Remove camshaft bearing bridge
O
again. Compare the
Plastigauge
clearance gauge with the specifications on the
packaging.
Guideline
Camshaft bearing - sleeve bearing
Radial clearance
Wear limit
•
Info
0.020 ... 0.054 mm (0.00079
... 0.00213 in)
0.065 mm (0.00256 in)
I
The width of the
Plastigauge
clearance gauge is a
measure of the bearing play.
- Take off the camshafts and clean the parts.
Remove screw plugs
O
with the O-ring.
-
Screw appropriate screw
8
into the cam lever shaft.
Hold cam levers
@)
and remove the cam lever shaft.
Info
If the cam levers will continue to be used, note down
their installation position.
- Take the shims from the valve spring retainers and put them
aside corresponding to their installation position.
Pre-tension the valve springs using the special tool.
Valve spring mounter (59029019000) (
I!;!
p. 288)
Insert for valve spring lever (79029060000) (
8
p. 294)
Insert for valve spring lever (77029041200) (
�
p. 291)
Remove the valve keys and release the tension on the valve
springs.