Valve cone, rear cylinder head, B284 (new version)
Valve cone, rear cylinder head, B284 (new version) |
To remove |
Important | ||
Store all removed valve parts in the valve stand 83 93 787. |
||
1. |
Remove the
Camshaft cover, rear, B284
.
|
2. |
Remove the spark plugs.
|
3. |
Remove the camshaft solenoid valve (695R) (A).
|
4. |
Remove the camshaft position sensor (555R) (B).
|
6. |
Raise the car.
|
7. |
Remove the
Starter motor, B284
.
|
8. |
Fit
EN-46106 Flywheel locking attachment
(A).
|
9. |
Lower the car.
|
10. |
Mark the chain and camshaft sprockets so they can be refitted in the same position (A).
|
11. |
Slightly loosen the bolts holding the camshaft sprockets. Counterhold using an open spanner on the camshaft flats (do not remove the bolts) (B).
|
13. |
Tighten EN-48313 Fixing tool manually so that the chain is unloaded. Counterhold using an open spanner so that the tool does not turn.
|
14. |
Remove the camshaft sprocket bolts.
|
15. |
Remove the sprockets from the camshafts.
|
17. |
Lift out the camshafts and note the rear marking on the camshafts. (B) The last letters in the marking: RI = intake camshaft, rear cylinder bank. RE = exhaust camshaft, rear cylinder bank.
|
18. |
Remove the roller rockers and the hydraulic adjuster elements. Store them in
83 93 787 Valve stand
so they do not get mixed up (A).
|
19. |
Fit
EN-46110 Valve spring tool
.
|
20. |
Fit
83 94 173 Air nipple for spark plug hole
. Connect compressed air and put the piston and valves under pressure (A).
|
21. |
Press down the valve plate with
EN-46110 Valve spring tool
(B).
|
22. |
Remove the valve cone with a magnet (A).
|
To fit |
1. |
Press down the valve plate with
EN-46110-eu Valve spring tool
.
|
2. |
Fit the valve cone using
EN-46117 Fitting tool
(A).
|
3. |
Unload the valve and remove
EN-46110-eu Valve spring tool
.
|
4. |
Disconnect the compressed air and remove the air nipple.
|
6. |
Fit the bearing caps as illustrated (markings on caps). Start where the cams point down and load the tappets.
Tightening torque 10 Nm (7 lbf ft)
|
7. |
Fit the sprockets with chain on the camshafts. Tighten the bolts by hand.
|
8. |
Check that the markings on the chain match the markings on the sprockets (A).
|
9. |
Remove EN-48313 Fixing tool.
|
10. |
Tighten the bolts of both camshaft sprockets (B), counterholding with an open spanner on the camshaft flats.
Tightening torque: 65 Nm (48 lbf ft) |
11. |
Fit the camshaft position sensor (555R) using a new gasket. (B)
Tightening torque 10 Nm (7 lbf ft) |
12. |
Fit the camshaft solenoid valve (695R) using a new seal (A).
Tightening torque 10 Nm (7 lbf ft) |
13. |
Fit the spark plugs.
|
14. |
Raise the car.
|
15. |
Remove
EN-46106 Flywheel locking attachment
(A).
|
16. |
Fit the
Starter motor, B284
.
|
17. |
Lower the car.
|
18. |
Fit the
Camshaft cover, rear, B284
.
|