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Tips on ZF gearbox maintenance: Make your truck more powerful

Tips on ZF gearbox maintenance: Make your truck more powerful

Jun 26,2025
In the transmission system of heavy-duty vehicles, ZF gearboxes are known for their high efficiency, durability and precision, and are widely used in medium and heavy-duty trucks, buses and construction machinery. Correct maintenance and timely repairs are the key to ensuring the long-term stable operation of ZF gearboxes. Today, we will bring you some tips on ZF gearbox maintenance to help you better understand the maintenance points of this set of core components.

1. Common fault phenomena and warning signals
Shifting setbacks/delays: It may be a fault in the electronic control module or a blockage in the hydraulic system.
Abnormal noise or slippage: Gear wear, poor lubrication or clutch plate damage.
Oil temperature is too high: cooling system abnormalities or oil deterioration.

2. Regular maintenance recommendations
Replace the gearbox oil: ZF officially recommends replacing the special gearbox oil once between 60,000 and 100,000 kilometers of vehicle travel, and checking the filter.
Check the oil seal and connectors: avoid leakage and insufficient oil.
Electronic control system detection: Use special diagnostic tools such as ZF Testman Pro to perform regular diagnosis of TCU (transmission control unit).

3. Maintenance suggestions: Use special tools to improve efficiency and safety
The internal structure of ZF transmission is precise, and the tool accuracy is extremely high during disassembly and assembly. We recommend the use of a maintenance tool kit developed specifically for ZF transmissions, which can achieve:
Precise positioning of clutch components to avoid errors;
More efficient disassembly and assembly of synchronizers, main shafts/counter shafts;
Improve maintenance safety and reduce component damage rate.

4. The importance of professional technical support
Since ZF transmissions cover manual, automatic and AMT types, it is recommended that they be operated by maintenance technicians with training and certification. At the same time, obtaining original technical information and maintenance manuals is also an important guarantee to ensure the quality of maintenance.
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