16
ENGINE
16.4.22 Removing valves
16.4.23 Checking valves
–
Press in the large camshaft bearing as far as possible using the special tool
Push-in drift (75029044010) (
300230-10
Finishing work
–
Install the rocker arm. (
–
Take shims
to their normal built-in position.
300115-10
–
Pretension the valve springs using the special tool.
Valve spring compressor (59029019000) (
Valve spring mounting device (78029060000) (
–
Remove valve keys and release tension on the valve springs.
–
Remove spring retainers and spring.
–
Pull the valve down and out of the valve guide, remove the valve stem seal and
valve spring retainer.
300116-10
–
Mark the valves according to their normal built-in position.
Info
Place the valves into a box according to the installation position and label
the box.
300117-10
–
Check the run-out at the valve plate.
Valve - run-out
On the valve plate
»
If the measured value does not equal the specified value:
–
Change the valve.
200193-10
p. 216)
p. 134)
out of the valve spring retainers and lay them to one side according
1
p. 212)
p. 219)
≤ 0.05 mm (≤ 0.002 in)
131
.
4