Disassembling and Assembling Front Spring Strut - GT3
Disassembling and assembling front spring strut - GT3Notes about adjustment work on the spring struts
The spring strut has a thread and a height adjusting nut No. 2 for height adjustment. The height adjusting nut No. 2 is secured against turning by the lock nut No. 1.
The stabilizer block - No. 4 - (mounting saddle for the stabilizer mount) is also fitted on the thread. The stabilizer block can be vertically adjusted and it is provided with a lock nut No. 3. This adjustment possibility is only useful for racing. It can be used to ensure that enough clearance is available for the stabilizer mount even for deviating vehicle heights (only for racing) and also that the stabilizer mount can be fitted free of tension.
The stabilizer block No. 4 does not need to be adjusted for the vehicle height prescribed for street use.
The stabilizer block No. 4 - dimension B - is also set with replacement dampers.
1 Lock nut
2 Height adjusting nut
3 Lock nut
4 Stabilizer block
Dimension A = pre-setting dimension for production (273 mm). The dimension may be different with the prescribed vehicle height. If the damper is replaced, the actual dimension must be transferred to the new damper.
Dimension B = 198 mm (plus/minus 0.5 mm)
Disassembling and assembling front spring strut - GT3
Disassembly and assembly instructions
Disassembly
- If necessary, tension the coil spring with the spring clamp until the piston rod is relieved.
- To undo the connection (piston rod to spring strut mount) counter at the piston rod with a 7-mm Allen key. Important: Never use an impact bolter to loosen or tighten the fastening nut.
- Remove all parts from the piston rod.
Preliminary work and notes on assembly
- Replace nut for fastening the piston rod on the spring strut mount.
- Grease thread of the piston rod with Optimoly HT (copper grease/only at the front axle).
Note!
^ If the vibration damper is to be replaced, set the height adjusting nut No. 2 to the same position as on the old vibration damper (transfer the actual dimension A to the new vibration damper).
A hook wrench insert - special tool 9647 - is required for this purpose. Special tool 9647 is required for changing the vehicle height (dimension A) and for adjusting the stabilizer mating bearing (dimension B). The special tool is used together with a torque wrench to tighten the lock nuts (slotted nuts) on the spring struts. Tightening torques in Front Wheel Suspension, Drive Shafts/Rear Wheel Suspension, Axle Shaft.
4 Stabilizer block
Attention: The stabilizer block need not be adjusted for street use. The stabilizer block - dimension B (198 mm plus/minus 0.5 mm) - is also set on replacement dampers.
Special tool 9647
Assembly
- Put coil spring No. 6, spring plate No. 3 with rubber ring No. 4 and bellows No. 5 onto the vibration damper.
Note!
^ The tighter winding of the coil spring must face down - toward the damper tube. The coil spring is equipped with an approximately 50 mm long protective sheath. This protective sheath is not yet present on vehicles from the initial production run.
- Push the spring strut and mount assembly, consisting of parts No. 8, No. 9, No. 10 and No. 11, onto the piston rod.
Note!
^ The mounts for the right and left sides are identical parts. In the case of used mounts, the bearing shell can be regreased with Autol Top 2000.
Manufacturer: Autol-Werke Paradiesstr. 14 97080 Wurzburg
- Fit new fastening nut and tighten it on the pushrod thread, which has been greased with Optimoly HT (copper paste). Tightening torque 80 Nm (59 ft. lbs.). When tightening the fastening nut, hold at the piston rod using a 7-mm Allen key. Important: Never use an impact bolter to tighten the fastening nut.