# Preventive Maintenance

The gearbox in the TZB25 consists of two parts. The first Gear Stage is lubricated with oil. The Planetary Gear Stage, which consists of 2 to 3 planetary gears, are lubricated with grease.

| 200 hours: | 2000 hours: | Every 2000 hours:
First Gear Stage | Check oil. Replace 12-14 ml oil. | Check oil. Replace 12-14 ml oil. | Check oil. Replace 12-14 ml oil.
Planetary Gear Stage | No maintenance. | Clean and inspect planetary gearbox. Replace all worn gear wheels and bearings. Refill the grease. | Clean and inspect planetary gearbox. Replace all worn gear wheels and bearings. Refill the grease