11 34 560 Replacing All Valve Stem Seals (N73)

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NOTE:

For Special Tool identification, see ENGINE- SPECIAL TOOLS .

Special Tools Required:

11 1 380
11 3 380
11 6 370
11 6 380

Necessary Preliminary Tasks:

Remove left cylinder head cover. Refer to 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N73) .
Remove right cylinder head cover. Refer to 11 12 006 REMOVING AND INSTALLING/SEALING RIGHT CYLINDER HEAD COVER (N73) .
Remove inlet and exhaust adjustment unit on left side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST VANOS ON LEFT SIDE (N73) .
Remove inlet and exhaust adjustment unit on right side. Refer to 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST VANOS ON LEFT SIDE (N73) .
Remove left intermediate lever. Refer to 11 37 012 REMOVING AND INSTALLING/REPLACING LEFT INTERMEDIATE LEVERS (N73) .
Remove right intermediate lever. Refer to 11 37 014 REMOVING AND INSTALLING/REPLACING RIGHT INTERMEDIATE LEVERS (N73) .
Remove left exhaust camshaft. Refer to 11 31 036 REMOVING AND INSTALLING/REPLACING LEFT EXHAUST CAMSHAFT (N73) .
Remove right exhaust camshaft. Refer to 11 31 038 REMOVING AND INSTALLING/REPLACING RIGHT EXHAUST CAMSHAFT (N73) .
Remove left cylinder head. Refer to 11 12 105 REMOVING AND INSTALLING LEFT CYLINDER HEAD (N73) .
Remove right cylinder head. Refer to 11 12 106 REMOVING AND INSTALLING RIGHT CYLINDER HEAD (N73) .
Remove all valve springs. Refer to 11 34 715 REPLACING ALL VALVE SPRINGS (N73) .

Press special tool 11 6 370 onto valve stem seals.

Withdraw valve stem seals by turning and simultaneously pulling with special tool 11 6 370.

Fig 1: Identifying Valve Stem Seal Puller

Courtesy of BMW OF NORTH AMERICA, INC.

Fit special tool 11 1 380.

Fit new valve stem seals (1).

Fig 2: Fitting Valve Stem Seals On Bush

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Apply a light coat of oil to valve stem and valve stem seals.

Fig 3: Identifying Special Tool (00 6 380)

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For use on the N62 and N73 engines, special tool 11 6 380 must be remachined in accordance with the illustration with a 6.2 mm dia. drill bit to a depth of A = approx. 45 mm.

This modification has already been taken into account for reordering.

Fig 4: Installing Valve Stem Seals Using Bush

Courtesy of BMW OF NORTH AMERICA, INC.

Press on new valve stem seals with special tool 11 3 380 by hand up to stop.

Assemble engine.