11 33 516 Removing And Installing/Replacing Rocker Arms On Left Inlet Side (N62 To 9/03): Notes

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 9 470
11 9 473

cylinder bank 5 to 8)

Removal

Removal of rocker arms is described separately from installation.

Remove servomotor for left eccentric shaft. See 11 37 022 REMOVING AND INSTALLING/REPLACING SERVOMOTOR FOR LEFT ECCENTRIC SHAFT (N62/N62TU) .

Remove ignition coils on cylinder bank 5 to 8.

Remove left cylinder head cover. See 11 12 005 REMOVING AND INSTALLING/SEALING LEFT CYLINDER HEAD COVER (N62/N62TU) .

Remove spark plugs on cylinder bank 5 to 8.

Remove inlet and exhaust adjustment unit on left side. See 11 36 047 REMOVING AND INSTALLING/REPLACING INLET AND EXHAUST ADJUSTMENT UNITS ON LEFT SIDE (N62/N62TU) .

IMPORTANT: The inlet camshaft must first be rotated so that when the bearing bracket is removed the intermediate levers do not slip out and damage the camshaft.

Rotate inlet camshaft against direction of rotation until lettering (1) on 8th cylinder points upwards in cylinder axis and cam is horizontal.

Fig 1: Identifying Camshaft 8Th Cylinder Points

G04739796

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate eccentric shaft at dihedral head as illustrated in order to reduce tension on torsion spring (1).

Pretension torsion spring (1) with a cable strap (2), feed out from roller (3) and carefully relieve tension.

Fig 2: Identifying Pretension Torsion Spring With Cable Strap

G04773582

Courtesy of BMW OF NORTH AMERICA, INC.

Rotate eccentric shaft at dihedral head as shown in illustration back to minimum stroke position.

Fig 3: Rotating Eccentric Shaft

G04773583

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not mix up the camshaft bearing covers of cylinders 1 to 4 and 5 to 8.

NOTE: Bearing caps of inlet camshaft are marked on cylinder bank 5 to 8 with R E1 to R E5 from inlet side.

Release nuts and remove bearing cap R E1.

Fig 4: Identifying Bearing Cap Number

G04773855

Courtesy of BMW OF NORTH AMERICA, INC.

Release 8 nuts of bearing bracket (1) from outside to inside.

Fig 5: Identifying Bearing Bracket Nuts

G04777046

Courtesy of BMW OF NORTH AMERICA, INC.

Clamp special tool 11 9 470 as illustrated in a vise.

Fig 6: Identifying Special Tool (11 9 470)

G04777300

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig 7: Identifying Bearing Bracket

G04777049

Courtesy of BMW OF NORTH AMERICA, INC.

Place bearing bracket (1) with inlet camshaft and eccentric shaft as illustrated on special tool 11 9 470 .

Secure bearing bracket (1) with a nut (special tool 11 9 473) .

Fig 8: Identifying Bearing Bracket

G04739802

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: The lower section of the bearing bracket (1) is machined with the cylinder head and must not be mixed up.

NOTE: Lower section of bearing bracket (1) remains on cylinder head.

Fig 9: Identifying Lower Section Of Bearing Bracket

G04739803

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Rockers arms (1) are divided into individual tolerance classes.
The tolerance classes are designated as illustrated with the numbers from 1 to 4.
Used rocker arms (1) may only be reused in the same position.

When replacing rocker arms (1) on inlet side: install rocker arms of the same tolerance class in the same position.

Remove rocker arms (1) on inlet side and set aside in neat order.

Fig 10: Identifying Rocker Arms

G04777304

Courtesy of BMW OF NORTH AMERICA, INC.