11 33 517 Removing and installing/replacing rocker arms on right inlet side (N62 from 9/03): Notes

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Special tools required:

119 470
119 473

(cylinder bank 1 to 4)

Removal

Removal of rocker arms is described separately from installation.

Remove servomotor for right eccentric shaft. Refer to 11 37 024 Removing and installing/replacing servomotor for right eccentric shaft (N62) .

Remove ignition coils on cylinder bank 1 to 4.

Remove right cylinder head cover. Refer to 11 12 006 Removing and installing / sealing right cylinder head cover (N62 / N62TU) .

Remove spark plugs on cylinder bank 1 to 4.

Install inlet and exhaust adjustment unit on right side. Refer to 11 36 048 Removing and installing/replacing inlet and exhaust adjustment units on right side (N62) .

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 in direction of rotation until cam on 1st cylinder is positioned horizontally as shown in illustration.

Fig 1: Rotating Inlet Camshaft

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 1 to 4 with L E1 to L E5 from inlet side.

Release nuts and remove bearing cap L E1.

Fig 2: Removing Bearing Cap L E1

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Releasing Bearing Bracket Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 4: Clamping Special Tool In Vise

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Do not tilt bearing bracket (1).

Carefully lift out bearing bracket (1).

Fig 5: Removing Bearing Bracket

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.

Fig 6: Securing Bearing Bracket

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

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

Fig 7: Identifying Lower Section Of Bearing Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

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

IMPORTANT: Rockers arms (1) are divided into individual tolerance classes.

Fig 8: View Of Rocker Arm

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Replacement only:

When replacing rocker arms (1) on inlet side:

Rocker arms have new tolerance classes and must be assigned to the old tolerance classes and fitted in the same position.

Fig 9: View Of New Rocker Arm

Courtesy of BMW OF NORTH AMERICA, INC.

Old 1 = new 2A
Old 2 = new 2A
Old 3 = new 2B
Old 4 = new 2B