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30/ENGINE - WORK ON THE INDIVIDUAL PARTS
Changing the camshaft bearing
20.17
Checking the camshafts
20.18
Checking the pivot points of the camshafts
20.19
–
Change the piston ring.
–
Mount the piston ring with the marking facing toward the piston head.
–
Clamp special tool
Adjustment bush bridge (77229050000) (
–
Mount the camshaft on the special tool.
–
Remove screw
302705-10
–
Pull camshaft gear
Extractor, camshaft gear (77229001044) (
–
Remove bearing
–
Oil the new bearing
Lubricated with engine oil
–
Degrease the cone of the camshaft and camshaft gear.
–
Mount camshaft gear
302767-10
–
Mount screw
Guideline
Screw, camshaft drive
sprocket
–
Repeat these steps for the second camshaft.
302705-11
–
Check the camshaft for damage and wear.
»
If there is damage or wear:
–
Change the camshaft.
–
If the surface of the cams is damaged, check the oil supply to the camshaft
and cam lever.
–
Check the autodecompressor for damage and wear.
»
If there is damage or wear:
–
Change the exhaust camshaft.
302713-10
–
Slide the camshaft bearing to the camshaft gear.
–
Pull lever
1
»
If the lever does not return to its original position:
–
Change the exhaust camshaft.
–
Check the pivot points of the camshafts.
»
If there is damage or wear:
–
Change the cylinder head with the camshaft bearing bridge.
302709-10
into a vise.
1
.
2
off of the camshaft.
3
.
4
and push it onto the camshaft.
4
.
3
but do not tighten yet.
2
M12x1
away from camshaft and release it.
p. 278)
p. 276)
80 Nm
Loc-
tite
243™/cone
(59 lbf ft)
®
degreased
141
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