FAQ – Leaf springs

How many different types of leaf springs can CS-Germany© deliver?
Over 4000 types, also around 8000 individual layers.

Is it necessary to replace the U-bolts after fitting a new spring?
In almost all cases they can be reused. They only need replacement if the accessories are
damaged. CS-Germany© can deliver all attachments you require.

Is it advisable to replace springs in pairs, even if just one spring is broken?
In most cases the vehicle will stand at a slant if just one spring is replaced. The second spring often breaks just a few days later as the two springs are exposed to the same stress.

What causes leaf springs to break?
Usually it is torsion (twisting) that causes breakage. This is due to poor road surfaces. Also, overloading the vehicles frequently causes the springs to break.

Is it advisable to grease the leaf springs between the spring layers?
No. Exception: Only if the springs had previously been removed, dismantled, and the individual spring layers were stripped of rust.

Is it worth replacing just individual spring layers when the springs break?
No. All spring layers are subject to an identical ageing process. Other layers frequently break within a few kilometres following repair.

Why is the service life of leaf springs usually lower compared with coil springs?
The annual mileage of a truck is often over 100,000 km and therefore higher than that of a car. Moreover, trucks are frequently overloaded.

How large is the weight difference between standard steel and composite leaf springs?
The weight savings are around 80 %. A standard front spring on a Sprinter weighs approx. 25 kg, while the compatible composite leaf springs comes in at just 5 kg.

Do leaf springs come with bushes?
CS-Germany© delivers all its leaf springs with all necessary accessories such as bushes, rubber buffers and such like.

Can leaf or parabolic leaf springs be reinforced?
We have developed a large number of reinforcement kits specifically for vans such as the Sprinter, the Crafter, the Transit or the Ducato. In most cases they are easy to fit and do not require removal of the springs. The kits come with all the necessary accessories.

Why does the central hole of a new spring break after just a few weeks?
A spring can only break in the clamping area if the axle plate is insufficiently clamped. The central hole of the spring is a predetermined breaking point. Further, the clamping area of the spring is exposed to high forces. This is why rust must be stripped from the axle and spring plate before installation, the thread on the U-bolts must be greased and the correct torque must be applied to tighten the nuts. The nuts on the U-bolts should be checked and tightened as required after approx. 100 km. The spring will not break in the central hole if it is fitted properly, as spring forces can only play out between the spring eyes and the U-bolts.