17
ENGINE
132
» If the measured value does not meet specifications:
–
Change the oil pump and, if necessary, the engine case.
17.4.17 Replacing autodecompressor
300107-10
–
Take the lock ring
1
off the autodecompression shaft and dispose of it.
300108-10
–
Pull the autodecompression shaft
2
from the camshaft.
300109-10
–
Disconnect the autodecompression spring. Loosen the screw
3
and remove it
together with the autodecompression spring and the autodecompression weight
4
.
300110-10
–
When assembling, first connect the autodecompression spring and then insert the
screw through the autodecompression weight.
The arm of the autodecompression spring
5
is long enough to pass right
through the autodecompression weight.
–
Position the autodecompression weight. Mount and tighten screw
3
. Reconnect
the autodecompression spring.
Guideline
Screw, autodecompression M6
3… 4 Nm
(2.2…
3 lbf ft)
Loctite
®
243™
–
Mount the autodecompression shaft in the camshaft. Install a new lock ring.
–
Check the functioning.
» If the autodecompression spring does not completely retract the autodecom-
pression shaft:
–
Replace the autodecompression spring.
17.4.18 Preparing timing chain tensioner for installation
200171-10
–
Fully compress the timing chain tensioner.
Info
This requires considerable force since the oil has to be pressed out.
–
Release the timing chain tensioner.
Without pressure, the timing chain tensioner expands fully.