Valve cone, front (new version)
Valve cone, front (new version) |
To remove |
Important | ||
Store all removed valve parts in the valve stand 83 93 787. |
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1. |
Remove the
Camshaft cover, front
|
2. |
Remove the spark plugs.
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3. |
Remove the coolant port (A).
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4. |
Remove the camshaft solenoid valve (695F) (B).
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5. |
Remove the camshaft position sensor (555F) (C).
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6. |
Rotate the crankshaft so that the markings on the camshaft sprockets are visible (A), and the indentations align with the cylinder head. Use
EN-46105-1 Adjustment tool
as a gauge (the camshafts are now in their neutral position).
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7. |
Fit
EN-46106 Flywheel locking attachment
(A).
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8. |
Mark the chain and camshaft sprocket so they can be refitted in the same position.
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9. |
Loosen the torque on the bolts holding the camshaft sprockets (A). Counterhold using an open spanner on the camshaft flats (do not remove the bolts).
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10. |
Fit
EN-46108-1 Fixing tool
to the camshaft chain on the intake side (B). Check that the tool grips the chain firmly.
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11. |
Fit
EN-46108-2 Fixing tool
to the camshaft chain on the exhaust side (C). Check that the tool grips the chain firmly.
|
12. |
Tighten
EN-46108 Fixing tool
so that the chain is unloaded.
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13. |
Remove the camshaft sprocket bolts (D).
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14. |
Remove the sprockets from the camshafts.
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16. |
Lift out the camshafts and note the rear marking on the camshafts (B).
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17. |
Remove the roller rockers and the hydraulic adjuster elements (A). Store them in
83 93 787 Valve stand
so they do not get mixed up.
|
18. |
Fit
EN-46110-eu Valve spring tool
(A).
|
19. |
Fit
83 94 173 Air nipple for spark plug hole
. Connect compressed air and put the piston and valves under pressure (A).
|
20. |
Press down the valve plate with
EN-46110-eu Valve spring tool
(B).
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To fit |
1. |
Fit the valve cone using
EN-46117 Fitting tool
(A).
|
2. |
Unload the valve and remove
EN-46110-eu Valve spring tool
.
|
3. |
Disconnect the compressed air and remove the air nipple.
|
4. |
Position the camshafts and use
EN-46105 Adjustment tool
to check that the camshafts are mounted at the correct angle (B).
|
5. |
Fit the bearing caps as illustrated (markings on caps) (A). Start where the cams point down and load the tappets. Note: tighten the bolts in stages - 1/2 to 1 turn.
Tightening torque 10 Nm (7 lbf ft)
|
6. |
Fit the sprockets with chain on the camshafts. Tighten the bolts by hand.
|
7. |
Check that the marks on the chain match the markings on the sprockets.
|
8. |
Remove
EN-46108-2 Fixing tool
(A).
|
9. |
Remove
EN-46108-1 Fixing tool
(B).
|
10. |
Tighten the bolts of both camshaft sprockets, counterholding with an open spanner on the camshaft flats (C).
Tightening torque: 65 Nm (48 lbf ft) |
11. |
Remove
EN-46106 Flywheel locking attachment
.
|
12. |
Fit the camshaft position sensor (555F) using a new gasket (C).
Tightening torque 10 Nm (7 lbf ft) |
13. |
Fit the camshaft solenoid valve (695F) using a new seal (B).
Tightening torque 10 Nm (7 lbf ft) |
14. |
Fit the coolant port using a new seal and gasket (A).
Tightening torque 10 Nm (7 lbf ft) |
15. |
Fit the spark plugs.
|
16. |
Fit the
Camshaft cover, front
or
Camshaft cover, rear
.
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