Installing torsion springs

Further information is available.

CAUTION: Spring preload.
Injury hazard!

The use of the specified special tool (tool) is mandatory.
Carry out the described steps properly.

NOTE: TECHNICAL INFORMATION
Wear safety goggles.

NOTE: TECHNICAL INFORMATION
For disassembly and installation of the torsion spring, special tool 2 359 088 is used. Due to technical modifications in the torsion spring, special tool 5 AOB 120 is mounted on the existing special tool 2 359 088.
Information on modification can be found in the additional information.

NOTE: TECHNICAL INFORMATION
Alternative to the new special tool 5 A24 F30, the already known special tool SWZ: 2 359 088 can be used in modified form.
Information on modification can be found in the additional information.
The modified special tool is upward compatible.

NOTE: TECHNICAL INFORMATION
When replacing one or more torsion springs:
When removing the torsion spring, it is imperative to note the part number of the torsion spring.
A mixed installation of torsion springs is only permitted in combination with the appropriate intermediate lever.
For further information on possible combinations, see the applicable BMW parts catalogue.

Version with a torsion spring with an L-shaped contour and a suitable intermediate lever:
Use torsion spring (1) with an L-shaped contour only in conjunction with a suitable intermediate lever (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an S-shaped contour and a suitable intermediate lever:
Use torsion spring (1) with an S-shaped contour only in conjunction with a suitable intermediate lever (2).

Courtesy of BMW OF NORTH AMERICA, INC.

Keep set of special tools 2 359 088 for removing the torsion spring with an S-shaped contour ready:

Number	Description
1	Clamping lever
2	Mount for the clamping lever (torsion spring with an S-shaped contour)

Courtesy of BMW OF NORTH AMERICA, INC.

Keep set of special tools 5 A24 F30 or, alternatively, the modified special tool 2 359 088 for removing the torsion spring with an L/S-shaped contour ready:

Number	Description
1	Clamping lever
2	Mount for the clamping lever (torsion spring with an L/S-shaped contour)

Courtesy of BMW OF NORTH AMERICA, INC.

Version with a torsion spring with an S-shaped contour with special tool 5 A24 F30 or the modified special tool 2 359 088:
Move shaped part (1) to the contact surface in the arrow direction.

Turn wing screw (2) until hand-tight.

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an L-shaped contour with special tool 5 A24 F30 or the modified special tool 2 359 088:
Move shaped part (1) to the contact surface in the arrow direction.

Turn wing screw (2) until hand-tight.

Courtesy of BMW OF NORTH AMERICA, INC.
Position torsion spring (1) in clamping lever (2).
Torsion spring (1) must be positioned correctly in the marked area (3) of clamping lever (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an S-shaped contour with special tool 2 359 088:
Close clamping lever (1) of special tool 2 359 088 carefully in the corresponding mount until the snap-in hooks engage audibly.

Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) when tensioning.

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an S-shaped contour with special tool 5 A24 F30 or the modified special tool 2 359 088:
Close clamping lever (1) of special tool 5 A24 F30 or the modified special tool 2 359 088 carefully in the corresponding mount until the snap-in hooks engage audibly.

Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) when tensioning.

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an L-shaped contour with special tool 5 A24 F30 or the modified special tool 2 359 088:
Close clamping lever (1) of special tool 5 A24 F30 or the modified special tool 2 359 088 carefully in the corresponding mount until the snap-in hooks engage audibly.
Ensure that torsion spring (2) lies correctly in the lateral guides (arrows) and mark of clamping lever (1) when tensioning.

Courtesy of BMW OF NORTH AMERICA, INC.
Move clamping lever (2) with the tensioned torsion spring carefully out of mount (3) in the arrow direction.

Courtesy of BMW OF NORTH AMERICA, INC.
Insert torsion spring (2) with clamping lever (1) into cylinder head (3).

Courtesy of BMW OF NORTH AMERICA, INC.
Version with a torsion spring with an S-shaped contour on an intermediate lever
Insert the torsion spring (2) into the intermediate levers (1).
Check all roller cam followers (3) for correct installation position.

Courtesy of BMW OF NORTH AMERICA, INC.
Place clamping lever (1) flat in the marked area (2).
Press together clamping lever (1) until snap-in hooks (3) unlock audibly.
Open clamping lever (1) carefully until the torsion spring is fully relaxed.
Guide out and remove clamping lever (1).

Courtesy of BMW OF NORTH AMERICA, INC.
Fit torsion spring (1) correctly in the arrow direction using a standard plastic hammer (3) and a standard plastic wedge (2).

Courtesy of BMW OF NORTH AMERICA, INC.
Check the correct installation position of the torsion spring (arrow).

Courtesy of BMW OF NORTH AMERICA, INC.