Overhaul
Disassembling and assembling front spring strut (steel springs)Tools
Information
Component overview
The steel springs do not apply for the Cayenne Turbo.
Standard Cayenne Turbo equipment: Air springs with level regulation and vertical adjustment.
Mounting instructions
ATTENTION:
Increased risk of accidents due to spring tensioning.
^ Danger of injury and damage from springs jumping out.
^ Never use an impact bolter to loosen or tighten the fastening nut.
^ Use a commercially available changeover ratchet.
Note:
^ Observe the correct allocation (engine variant) when installing new coil springs and/or shock absorbers.
^ Observe allocation of the bottom spring plate according to the coil spring tolerance group.
^ We recommend that you replace the coil springs only in pairs.
1. Clamp the spring strut at a suitable place in the vice (use jaw liners).
2. Tension the coil springs -see figure- using spring clamp for spring struts NR.121 until the piston rod is relieved.
3. Loosen the connection (piston rod to supporting mount) at the piston rod using a commercially available changeover ratchet and a socket wrench insert 3353. Counter with an arm bracket 9630.
4. Remove all components from the piston rod.
Allocation of coil spring and bottom support
The bottom support (spring plate) is allocated according to the coil spring tolerance group.
The color coding -arrow- of the coil spring is located at the middle of the coil spring and is indicated by colored dots.
The bottom supports come in various thicknesses, differentiated by color. The supports used are colored differently as required.
Distinguishing feature and allocation of coil springs and shock absorbers
The coil springs are allocated using colored dots -arrow-. Yellow is used for the Cayenne and gold for the Cayenne S.
The shock absorbers are allocated using the spare part numbers and the model specification. At present, two different shock absorbers, right and left, are used on the front axle of the Cayenne and Cayenne S.
Preparations for assembly
1. Place the cap -1-, rubber stop -2- and protective sleeve -3- together as follows before pushing them on to the piston rod:
^ Push the rubber stop -2- up fully into the protective sleeve -3-.
^ Slide the cap into the protective sleeve -see figure- and pull the lip carefully over the cap.
2. Place the bottom concave washer (grey) -see figure- together with the bottom support -see figure- at the correct position (not twisted).
At the correct position means that the two individual parts are fitted precisely together.
3. Place the top concave support -see figure- together with the top support -see figure- at the correct position (not twisted).
At the correct position means that the two individual parts are fitted precisely together.
Assembly
ATTENTION:
Increased risk of accidents due to spring tensioning.
^ Danger of injury and damage from springs jumping out.
^ Never use an impact bolter to loosen or tighten the fastening nut.
^ Use a commercially available changeover ratchet.
1. Position the bottom support and bottom concave washer assembly at the correct position on the shock absorber.
At the correct position means that the two individual parts are fitted precisely together.
2. Position the pre-tensioned coil spring precisely at the stop in the bottom concave washer -arrow-.
3. Slide the protective sleeve/stop buffer/cap assembly loosely onto the piston rod.
4. Position the top concave support assembly with the top support.
- For the left spring strut, the marking -see figure- must be pointing away from the direction of travel when installing the top concave support.
- For the right spring strut, the marking must be pointing in the direction of travel when installing the top concave support.
- Position the top spring plate -arrow- precisely at the coil spring stop.
5. Once the concave support is positioned and aligned, the center lines -A- and -B- must be parallel. No. 1 -1- shows the connection of the connecting rod from the stabilizer to the spring strut.
6. Once the mount is positioned, fit the new lock nut. Screw the lock nut onto the piston rod until approximately 1 to 2 threads are visible above the lock nut. Then tighten with double-arm torque wrench 15 - 65 Nm (48 ft lb.) NR.93.
7. Complete the following steps to ensure that the protective sleeve (rear-axle spring strut in figure) -see figure- is seated correctly:
- Push the protective sleeve -arrow- up fully and clip it into the concave support.
- Push the protective sleeve -arrow- down fully and clip it to the shock absorber with the cap (audible click).