Disassembly and Assembly Instructions
DisassemblyCaution:
Danger of injury due to spring tensioning!
^ Never use an impact bolter to loosen or tighten the fastening nut!
^ Use commercially available changeover ratchet!
Note:
^ When installing new parts, observe the allocation!
^ To undo the connection - piston rod to spring strut mount - counter at the piston rod with countering tool 9630 or a 7-mm Allen key.
1. Tension the coil spring with the spring clamp until the piston rod is relieved.
2. Remove all parts from the piston rod.
Note:
^ Disassemble back-up ring -4- and mount -4A- only in the case of replacement.
3. Lever out the mount with a small screwdriver.
Distinguishing feature Of coil springs and dampers
A Identification of the running gear version (spring constant/spring length) by two different colored lines (for example, 1 x blue and 1 x white).
B Identification of the coil spring tolerance group (load group) for determination of the compensation part (spring plate) thickness.
1 white line 3.0 mm thick compensation part
1 green line 6.5 mm thick compensation part
C Color dot (color label) to differentiate the damper identifier.
Preliminary work and notes on assembly
Note:
^ Observe the correct allocation (running gear version) when installing new springs and/or dampers!
^ It is recommended to replace the coil springs only in pairs!
^ If the coil springs are exchanged, it might be necessary to use a different spring plate than before!
1. Replace nut for fastening the piston rod on the spring strut mount.
The following spring plates (compensation parts) are available:
1 white line 3.0 mm thick compensation part
1 green line 6.5 mm thick compensation part
2. Complete mount -4A-, back-up ring -4- and spring plate -5- (compensation part).
3. Fit protective bellows on additional spring.
4. Tension coil spring with spring clamp.
Assembly
Caution:
Danger of injury due to spring tensioning!
^ Never use an impact bolter to loosen or tighten the fastening nut!
^ Use commercially available changeover ratchet!
- If the vibration damper has been replaced or the spring seat loosened, align the appropriate spring seat in the center before tightening. The spring seat fastening screw must be installed in the direction of travel when doing this.
Note:
^ Space constraints and the position of the stabilizer mount are decisive factors. The stabilizer mount must be free of tension at complete right and left stops (ball heads still movable)!
^ After the spring strut is installed, the position of the spring seat must be checked again and may need minor adjustment!
^ Spring seats for the right and left sides are different! The distinguishing feature of the spring seat is a cast lug on the left spring seat! Also, a different cast number is stamped on the bottom of the spring seat!
Example:
996 343 508 02 even number for right side.
996 343 507 02 odd number for left side.
1. Slide the protective tube/additional spring assembly onto the piston rod.
2. Slide the cup washer -8- and stop plate -7- as far as they will go into the correct position on the piston rod.
Vibration damper
3. Place pre-tensioned coil spring on the vibration damper.
4. Place the mount/back-up ring/spring plate assembly on the coil spring.
Note:
^ The "RI" or "LE" code and a positioning arrow for installation in the correct position in the vehicle are stamped on the top of the spring strut mount -arrow-.
5. Place the left or right spring strut mount on the left or right section accordingly.
6. Place stop plate in the correct position on the spring strut mount and screw a new fastening nut onto the piston rod.
Note:
^ Use a socket wrench insert open on one side to tighten the fastening nut on the spring strut mount! In this way the specified tightening torque can be adhered to exactly! It is also possible to counter at the piston rod with countering tool 9630 at the same time!