3CX, 4CX
Wheeled Loaders
The water pump is the heart of the engine's cooling system. It is responsible for forcing the circulation of coolant between the engine and the radiator. If your machine is overheating, you see coolant leaks from the pump area (especially from the small weep hole), you hear a loud humming or grinding noise from the bearing, or you feel play in the pulley, these are classic symptoms of pump failure. Continued operation with a faulty pump leads to overheating and seizure of the engine – the most expensive possible failure.
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High Cooling Efficiency
Protects the engine from overheating
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Reinforced Bearing and Seal
Long life and no leaks
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Perfect Fit
Guaranteed hassle-free installation
The accuracy and quality of materials guarantee long and trouble-free use without the need for frequent replacement.
The pump is fully adapted to work with the original Leyland engine accessories, ensuring a consistent repair.
The NEXGEN brand is a proven and safe alternative that offers quality comparable to original parts at a much better price.
When replacing the pump, you must flush and refill the system with new, clean coolant, such as HYPTRON. Contaminants in old fluid can damage the new seal.
Before installing the new pump, flush the entire cooling system (radiator, engine block) with clean water to remove rust and scale.
Replacing the pump is the perfect opportunity to install a new thermostat and new V-belts. This ensures a comprehensive and durable repair.
Tighten the pump mounting bolts evenly and in a criss-cross sequence using a torque wrench. This will prevent stress and cracking of the housing.
Answer: It is one of the main causes. Other possibilities include a faulty thermostat, a slipping V-belt, a clogged radiator, or a low coolant level.
Question: I see a leak from a small hole in the pump. What does that mean?Answer: This hole is a "weep hole". A leak from it indicates that the internal shaft seal has failed. This is a clear sign that the pump needs to be replaced immediately.
Question: Can I just replace the bearing or seal?Answer: It is not recommended. Rebuilding a water pump requires specialized tools (presses) and is difficult to perform in standard workshop conditions. Replacing the complete pump is a much faster, more reliable, and durable solution.
If you are unsure whether the selected product is suitable for your machine, contact us and we will help you choose the right part and provide practical advice in minutes.
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