11 31 028 Removing and installing/replacing exhaust camshaft (N14)

Special tools required:

11 9 000
11 9 551
11 9 552
11 9 661
11 9 662

IMPORTANT: It is absolutely essential to follow an exact procedure for removing and installing the exhaust camshaft.

Necessary preliminary tasks:

Remove cylinder head cover .
Check timing .
Remove chain tensioner .

To release central bolts, always use special tool 11 9 551 of exhaust camshaft.

Position special tool 11 9 551 on twin surface of exhaust camshaft.

Secure special tool 11 9 551 with a screw (1).

Fig 1: Identifying Special Tool (11 9 551) And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Check function of adjustment unit locking by rotating camshaft.

Mount special tool 11 9 551 on inlet and exhaust camshafts.

Screw in special tool 11 9 552 on cylinder head with a screw.

To release central bolts, always use special tool 11 9 551.

Fig 2: Mounting Special Tool (11 9 522) On Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (2).

Remove clamping rail (1).

Fig 3: Identifying Clamping Rail And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 11 11 3AZ

Fig 4: Identifying Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release central bolt (3).

Tightening torque 11 36 2AZ

Feed out sprocket wheel (2) from timing chain (1) towards front.

Fig 5: Identifying Timing Chain, Sprocket Wheel And Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: Do not remove VANOS adjustment unit.

Release central bolt (3).

Tightening torque 11 36 1AZ

Fig 6: Identifying Central Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Removed cylinder head:
When using special tool 11 9 000, it will be necessary to remove the aluminum profile insert.

Screw special tool 11 9 661 with special tools 11 9 662 into spark plug holes.

Fig 7: Special Tool (11 9 661) With Special Tools (11 9 662)

Courtesy of BMW OF NORTH AMERICA, INC.

Release all screws on bearing caps (1 and 2).

Tightening torque 11 12 7AZ .

Bearing cap (1) is a thrust bearing and has the number (0).

All bearing caps (2) are identified with numbers from (1 to 4).

Fig 8: Identifying Bearing Caps

Courtesy of BMW OF NORTH AMERICA, INC.

Exhaust camshaft is identified with designation (EX).

Insert exhaust camshaft so that designation (EX) can be read from above.

Fig 9: Identifying Camshaft Designation (IN) And (EX)

Courtesy of BMW OF NORTH AMERICA, INC.

Position exhaust camshaft (1) so that cam of exhaust camshaft (1) points inward at an angle.

Installation:

Lubricate all bearing points with engine oil.

Fig 10: Positioning Of Exhaust Camshaft

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Installation:

Adjust valve timing .