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.
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