Installing torsion springs

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) .

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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) .

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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)

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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)

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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.

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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.

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Position torsion spring (1) in clamping lever (2) .
Torsion spring (1) must be positioned correctly in the marked area (3) of clamping lever (2) .

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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.

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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.

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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.

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Move clamping lever (2) with the tensioned torsion spring carefully out of mount (3) in the arrow direction.

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Insert torsion spring (2) with clamping lever (1) into cylinder head (3) .

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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.

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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) .

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Fit torsion spring (1) correctly in the arrow direction using a standard plastic hammer (3) and a standard plastic wedge (2).

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Check the correct installation position of the torsion spring (arrow).

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CAUTION: Spring preload.
Injury hazard!

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

NOTE: The description is provided only at one component. The procedure is the same for all other components.

Position the torsion springs (3) on the special tool 2 249 160 .
The lug in area (1) must be positively locked with the torsion spring panel (3) .

The guide pins (2) in the special tool 2 249 160 must be positively locked with the recesses in the torsion spring panel (3) .

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Connect individual parts of the special tool 2 249 160 (3) to (2) and secure with the locking pin (1) .
The locking pin (1) should audibly engage.
Clamp special tool 2 249 160 in a standard vice at area (2) .

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Use the lever (1) to push special tool 2 249 160 forward to pretension the torsion springs (3) .
The retaining pins (5) should be secured to the detent (4) on both sides.
Do not operate the release lever (2) .

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Feed in the special tool 2 249 160 with the torsion spring.
Position torsion springs in the intermediate levers on the cylinder head.
The ends of the torsion springs (1) must be located in the recesses of the intermediate lever (2) .

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Tighten screw at area (1) on the torsion spring panel.

TIGHTENING TORQUE SPECIFICATIONS

Torsion spring on cylinder head
M6x20 screw
	tightening torque	8.8 Nm

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The special tool 2 249 160 (2) must be pre-tensioned.
Press lever (1) on the special tool 2 249 160 in the direction of the arrow until the detents (2) release.

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Press the lever (1) on the special tool 2 249 160 forward to keep the torsion springs (3) tensioned.
Pull lever (2) down to release the retaining pins (5) from the anti-twist locks (4) .
Carefully release tension on the lever (1) on the special tool 2 249 160.
Remove the special tool 0 495 105 (11 4 480).
Repeat steps for all torsion springs. Twist camshaft if necessary.

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