Wacker Neuson
Cooling System Leak
Generator is leaking coolant under the unit or inside the enclosure
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Cracked radiator, Loose hose clamp, Failed water pump seal, Damaged coolant hose
How to Fix / Troubleshooting
Safety first: Never open the radiator cap on a hot engine. Allow full cool-down and relieve pressure before opening the system.
- Identify leak source: Inspect radiator, hoses, water pump, and drain plugs for wet areas or dried coolant residue.
- Tighten clamps: Gently tighten hose clamps at all hose connections.
- Replace damaged hoses: Any hose with cracks, bulges, or soft spots should be replaced with the correct diameter and rating.
- Radiator repair: Small leaks may be repaired by a radiator shop; large cracks usually require radiator replacement.
- Refill and bleed: Refill with the specified coolant mix and bleed air from the system per the manual.
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Repair Difficulty
Medium
3/5
Required Part
Radiator Hose Set
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