LEMON Manuals: Even more car manuals for everyone
Home >> Mini >> 2010 >> Cooper S, 2D Hatchback, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 1973 (Engine - Repair - V8 ( N62TU)) >> Valves With Springs >> 11 34 715 Replacing all valve springs (N62)

11 34 715 Replacing all valve springs (N62)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required: 

Remove bearing bracket (1) with inlet camshaft and stow in special tool 11 9 470.  The procedure is described in the section Removing and installing inlet camshaft  .

Fig 1: Identifying Special Tool (11 9 470) And (11 9 473)
G04739802Courtesy of BMW OF NORTH AMERICA, INC.

Remove exhaust camshaft.

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

Fig 2: Identifying Special Tool (11 0 346) On Valve Shaft
G04740102Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 3: Removing Valve Keys
G04207672Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: 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 Valve Springs Of Inlet Valves And Exhaust Valves
G04740094Courtesy of BMW OF NORTH AMERICA, INC.

1) Valve springs of inlet valves 

2) Valve springs of exhaust valves 

IMPORTANT: 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 Color Coding On Lower End Of Valve Spring
G04740095Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement:

  1. Valve
  2. Valve stem seal with spring plate, bottom
  3. Valve spring
  4. Top plate spring
  5. Valve tapers
    Fig 6: Identifying Valve Components
    G04740096Courtesy of BMW OF NORTH AMERICA, INC.
scientia non olet · About LEMON Manuals