Manual Exclusive | Hilti Te 55

: The TE 55 is designed with an internal hammering mechanism; applying excessive force does not increase drilling speed and can damage the motor. Side Handle Adjustment

| Symptom | Manual Solution | Part Reference | | :--- | :--- | :--- | | | Hydraulic oil low or piston o-ring failed. Requires Hilti service center repair. | Section 8.4 | | Green LED flashing | Service indicator: Carbon brushes worn to 40% life. Replacement needed (Part #214471). | Section 10.2 | | Chisel falls out of chuck | TE-Y locking sleeve worn or dust ingress. Clean with Hilti grease (special lubricant, not standard grease). | Section 6.1 | | Excessive vibration | Broken internal spring in AVR system. Stop use immediately. | Safety Alert p.12 | hilti te 55 manual exclusive