Special tools required:

WARNING: This page is about a different car, the 2005 BMW 545i and 2004 BMW 545i. However, it is still accessible from the selected car via links, so may be relevant.

11 0 346
11 9 470

(cylinder head removed)

Preliminary tasks are described in 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (N62/N62TU) .

Remove bearing bracket (1) with inlet camshaft and stow in special tool 11 9 470. The procedure is described in the section 11 31 032 REMOVING AND INSTALLING/REPLACING LEFT INLET CAMSHAFT (N62 TO 9/03) AND/OR 11 31 034 REMOVING AND INSTALLING/REPLACING RIGHT INLET CAMSHAFT (N62 TO 9/03) .

Remove exhaust camshaft.

Fig 1: Removing Bearing Bracket With Inlet Camshaft

G03269925

Courtesy of BMW OF NORTH AMERICA, INC.

Align special tool 11 0 346 in direction of valve shaft.

Fig 2: Aligning Special Tool 11 0 346

G03269926

Courtesy of BMW OF NORTH AMERICA, INC.

Press down valve spring on spring cap, top, and remove valve keys.

Fig 3: Removing Valve Keys

G03269927

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Incorrect installation possible. Valve springs of exhaust and inlet camshafts are different. Incorrect installation will result in engine damage.

NOTE: Valve springs for exhaust valves are approx. 4 mm longer.

Fig 4: Identifying Dimensions Of Inlet And Exhaust Valves

G03269928

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Incorrect installation possible. Incorrect installation will result in valve spring breakage. The color coding (1) is normally located on the lower end of the 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.

Fig 5: Identifying Marking On Lower End Of Valve Spring

G03269929

Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement:

Fig 6: View Of Valve Components

G03269930

Courtesy of BMW OF NORTH AMERICA, INC.