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Home >> BMW >> 2009 >> 528i Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine - Repair >> 21 Crankshaft With Bearing >> 11 21 505 Sealing the crankcase's lower part (N52K) >> Replace aluminum screws

Replace aluminum screws

Remove oil deflector (2).

Fig 1: Identifying Screws And Oil Deflector
G04751093Courtesy of BMW OF NORTH AMERICA, INC.

Secure oil pump sprocket with steel pin 6.0 mm (3) to oil pump.

IMPORTANT: Release central bolt (2) only together with steel pin 6.0 mm (3).
Do not remove sprocket.

Release central bolt (2).

Tightening torque: 11 41 6AZ .

Fig 2: Identifying Oil Deflector And Screws
G06900714Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten screws (2).

Tightening torque: 11 41 6AZ .

Installation: 



Fig 1: Identifying Bolt And Screws
G04751252Courtesy of BMW OF NORTH AMERICA, INC.

Remove screw plug (1) from crankcase at front.

NOTE: Replace gasket.
Fig 2: Identifying Screw Plug
G06904187Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) for oil pump triangular drive with special tool 11 8 640 .

NOTE: It is not necessary to remove the triangular drive.
Fig 3: Identifying Oil Pump Triangular Drive Screw
G06904188Courtesy of BMW OF NORTH AMERICA, INC.


Fig 1: Identifying Screws
G04751253Courtesy of BMW OF NORTH AMERICA, INC.


Fig 1: Identifying Screws
G06904190Courtesy of BMW OF NORTH AMERICA, INC.

Detach sprocket (1) in direction of arrow.

NOTE: The chain tensioner pushes the timing chain (3) of the triangular drive upward.

Do not  remove camshaft sprocket.

Remove oil pump (2) in direction of arrow.

Fig 2: Pulling Drive Gear
G04751254Courtesy of BMW OF NORTH AMERICA, INC.