BMW 7 Series: Valves With Springs
REMOVING AND INSTALLING/REPLACING ALL VALVES (N63)
Necessary preliminary work
- Remove LEFT CYLINDER HEAD.
- Remove RIGHT CYLINDER HEAD.
- Remove camshafts.
Mount cylinder head (1) on special tool 11 9 000.
.png)
Fig. 284: Mounting Cylinder Head On Special Tool 11 9 000
Prepare special tool 11 9 008 on special tool 11 9 006.
.png)
Fig. 285: Preparing Special Tool 11 9 008 On Special Tool 11 9 006
Position special tool 11 9 006 with silicone cushion on cylinder head.
Slide locks (1) in direction of arrow and pretension with eccentric shaft.
.png)
Fig. 286: Sliding Locks In Direction Of Arrow And Pretension With Eccentric
Shaft
Press down valve spring with special tool 11 8 840.
.png)
Fig. 287: Pressing Down Valve Spring With Special Tool 11 8 840
Remove valve cotters (1) with a magnet.
Place valve springs and valve keys on special tool 11 4 480 in an orderly manner.
.png)
Fig. 288: Identifying Valve Cotters
IMPORTANT: Incorrect assembly possible.
Incorrect assembly will result in valve spring breakage.
Color marking (1) is normally on lower end of valve spring.
Only the diameter is decisive for the correct installation of the valve springs.
Install valve spring so that larger diameter points to spring plate at bottom.
.png)
Fig. 289: Dimensions Of Valve Spring
Arrangement:
.png)
Fig. 290: Exploded View Of Valve Assembly
- Valve
- Valve stem seal with spring cup, bottom
- Valve spring
- Top spring cup
- Valve keys
Release special tool 11 9 006 from cylinder head.
Remove all valves and place on special tool 11 4 480 in an orderly manner.
.png)
Fig. 291: Preparing Special Tool 11 9 008 On Special Tool 11 9 006
Assemble engine.
READ NEXT:
Replacing All Valve Springs (N63)
Necessary preliminary work
Remove LEFT CYLINDER HEAD.
Remove RIGHT CYLINDER HEAD.
Remove camshafts.
Mount cylinder head (1) on special tool 11 9 000.
Fig. 292: Mounting Cylinder Head On Special
Replacing All Valve Stem Seals (N63)
Notes
IMPORTANT: Risk of damage to sealing lip on valve stem seal.
Fit new valve stem seals only when all valves have been installed.
Necessary preliminary work
Remove all VALVE SPRINGS.
Press spe
SEE MORE:
Removing Hydraulic Chain Tensioner For Timing Chains On Left Side
(N63)
Notes
WARNING: Chain tensioner is pre-tensioned.
Release lock pin only in installed state.
Danger of injury!
IMPORTANT: Risk of damage!
The engine must not be cranked when the chain tensioner is removed.
The timing chain may jump.
Necessary preliminary work
Remove TIMING CASE COVER at top left
Replacing Bar
NOTE: Disassembly of lashing eyes, refer to REPLACING LASHING PLATE AND
LASHING EYE.
Remove lashing eyes (1).
Fig. 111: Identifying Lashing Eyes
Remove protective caps (1) on left/right.
Fig. 112: Identifying Protective Cap
Release hexagon screws (1) and countersunk head screws (2) on left/right.
