Track derailment is the most common fault of crawler undercarriage for European small and medium-sized machinery fleets. It not only delays construction progress, but also causes secondary damage to track chains, rollers and chassis frame, increasing maintenance costs. Below are 8 common causes and targeted solutions summarized from European local after-sales cases.

1. Improper Track Tightness
Too loose track is the primary cause of derailment, especially on European uneven farmland and rocky terrain. Too tight track will aggravate component wear. Solution：Adjust the tension cylinder regularly to keep the track in a slightly tight state, adapt to local rainy and muddy terrain.
2. Worn Guide Wheel & Track Roller
Long-term operation leads to wear of guide wheel and roller flange, losing the limit guiding effect on the track, causing track deviation and derailment. Solution：Check wearing parts every 500 working hours, replace severely worn accessories in time.
3. Deformed Chassis Frame
Collision and long-term overload operation on European urban narrow construction sites easily cause chassis frame deformation, resulting in inconsistent left and right track gaps and derailment. Solution：Calibrate the frame regularly, avoid long-term overload and violent collision.
4. Stuck Sediment & Stone Residue
In European rainy seasons, mud, sand and small stones easily accumulate inside the chassis, blocking track operation and causing derailment. Solution：Clean chassis sediment after daily construction, keep the internal structure unobstructed.

5. Uneven Ground Operation
Long-term side slope operation and unilateral stress on rugged terrain will cause track unilateral deviation and derailment. Solution：Avoid long-term 25°+ slope operation, keep the equipment balanced during construction.
6. Aging & Loose Track Chain
After long-term use, the track chain pin shaft wears and loosens, the track pitch becomes larger, resulting in poor meshing with the drive wheel and derailment. Solution：Replace aging track chain regularly, match high-quality accessories consistent with the original parameters.
7. Inconsistent Left & Right Track Tension
Asymmetric tension adjustment on both sides leads to inconsistent walking speed, causing track deviation and derailment. Solution：Adjust left and right track tension synchronously, ensure consistent tightness on both sides.
8. Unqualified Accessories Replacement
Replacing non-standard low-quality track and rollers with inconsistent parameters will cause poor overall matching and frequent derailment. Solution：Choose CE-certified standard undercarriage accessories consistent with equipment model.