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18 ENGINE
187
Mount and tighten screws ©.
Guideline
©
*gaC.\
Loctite® 243™
Screw, retaining bracket
M5
8 Nm
(5.9 Ibf ft)
r£ - w
311884-10
Finishing work
- Install cam lever and rocker arm. (SS p. 189)
18.4.22 Removing the valves
7
Pre-tension the valve springs using the special tool.
Valve spring mounter (59029019000) (Si p. 322)
/
Insert for valve spring lever (79029060000) (US p. 330)
Remove the valve keys and release the tension on the valve springs.
1
311862-10
Remove the valve spring retainer and valve springs.
Mark the valve springs according to their normal built-in position.
Pull the valve down out of the valve guide.
Remove valve stem seal O with the special tool.
O
«
5
Pliers for valve stem seals (77229010000) (Ki p. 329)
Remove valve spring seat
©
I*]
311863-10
Mark the valves corresponding to their installation position.
Info
Place the valves in a carton corresponding to their installation position and
label them.
I
IFvJ
Avf
AV%
300117-10
18.4.23 Checking the valves
Check the run-out at the valve plate.
Valve - run-out
On the valve plate
< 0.05 mm (< 0.002 in)
If the measured value does not equal the specified value:
- Change the valve.
305605-10
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