Installing torsion springs
Injury hazard!
- The use of the specified special tool (tool) is mandatory.
- Carry out the described steps properly.
Wear safety goggles.
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 A0B 120 is mounted on the existing special tool 2 359 088 .
Information on modification can be found in the additional 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.
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) .
- 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) .
- 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) - 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) - 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.
- 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.
- Position torsion spring (1)
in clamping lever (2)
.
Torsion spring (1) must be positioned correctly in the marked area (3) of clamping lever (2) .
- 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.
- 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.
- 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.
- Move clamping lever (2)
with the tensioned torsion spring carefully
out of mount (3)
in the arrow direction.
- Guide in and position clamping lever (1) with the preloaded torsion spring on the cylinder head.
- Ensure that clamping lever (1)
lies flat in the area
of the cylinder head.
- Ensure that the torsion spring (2) is correctly positioned in the intermediate lever (1) .
- Check the roller cam follower (3)
for the correct installation position.
- 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)
.
- Guide out and remove the clamping lever (1)
of the special tool 2 359 088
.
- Fit torsion spring (1) correctly
in the arrow direction using a standard plastic hammer (3)
and a standard plastic wedge (2)
.
- Check the correct installation orientation of the torsion spring (arrow) at the cylinder head.
- Insert and install the camshaft sensor wheel (3) .
- Ensure that the camshaft sensor wheel (3) is correctly positioned on the guide pin (4) .
- Affix the intake camshaft with a standard open-end wrench (1) .
- Tighten down screw (2) .
| Camshaft sensor wheel to intake camshaft | ||
| M6x16 Replace screw. |
1. Tightening torque | 5 Nm |
| 2. Angle of rotation | 90° | |