9.1. Adjusting Ride height
The 2CV has always had a very special spring system in which the suspension of the front and rear wheel is linked to every side. Every wheel is carried on bearings on a support arm to which a drawbar is connected. These drawbars of the front and rear wheel are connected to a joint suspension tube hanging on both sides next to the chassis. There is a separate spring for the front and rear wheel in the suspension tube.
Because the suspension tubes are hung floating, the suspension of the front wheel’s support arm influences the pressure of the spring of the back support arm on the same side and the other way round.
The length of the drawbars, as well as the degree of movement of the suspension tubes, can be adjusted. The drawbars are connected to the support arms by means of drawbar eyes and knife edges . The drawbar eyes are attached to the drawbars with screw-thread, so that the car height can be adjusted.
Checking and adjusting the height of the car:
Place the unloaded car ready on a flat floor with the front wheels straight. The tires should be equally worn and should have the right pressure.
Move the car up and down at the front and the back and let it settle itself.
Measure the car height at the front and the back. This is the distance from the ground to the bottom side of the chassis, just between the two bolts of the linchpin next to the locking plate. The measured distance should be:
Car Front Back
Burton 13 cm 16.5 cm
2CV 19.5 cm 28 cm
If you have measured something else, you need to adjust the height by turning the drawbar compared to the eye. Please bear in mind you can only do this if the tension is off! Jack the car all the way up until it comes off of the ground! There is a flat space on the drawbar where you can put a spanner 9. Raise the car by screwing the drawbar in; unscrewing the drawbar lowers the car. One rotation of the drawbar means a height distance of about 5 mm.
Adjusting the car height is not enough; it could be that the car is off-balance diagonally. It may happen that the weight of the car is on the left front wheel and the right rear wheel. The other two wheels just keep the car balanced. You will notice this because the car reacts differently if you turn left compared to turning right. This is very annoying.
Weighing should be done as follows: Jack up the car precisely in the middle between the linchpins of the rear axle tube. Use a supporting piece, as you can see on the picture. Make sure both rear wheels are off the ground.
Press the car on the front side a couple of times and let it settle itself.
Again, measure the car heights on the left front and right front. They should be precisely the same. If not, adjust them until the heights are alike. Lower the car again and check the back side again. If you want to adjust the height on the front side, equally screw or unscrew left and right to make sure the spring system will remain balanced.