2. Checking the condition of the components of the cooling system should be carried out after the power unit has completely cooled down (at least 3 hours after the engine has stopped).
3. See Section 4 for the procedure for standing still and correcting the coolant level.
4. Carefully inspect the upper and lower radiator hoses along with the smaller diameter interior heating hoses located between the power unit and the bulkhead of the engine compartment. Inspect hoses along their entire length and replace defective components if cracks, bulges or signs of aging are found. Small cracks are usually easier to see when squeezing the hose (see resist. illustration).
10.4. Examples of typical defects in radiator hoses
Note: The authors of this manual recommend replacing the hoses approximately every 4 years regardless of their condition.
5. Check that all hoses are securely fastened to their fittings / spigots - the hoses must be put on deep enough. Coolant leaks usually show up as rusty or white streaks on surrounding surfaces. If the hoses are fixed to the fittings / pipes with twist-type clamps, it would be reasonable to replace the latter with more reliable worm or screw ones.
6. Blow out with compressed air or use a soft brush to remove old leaves, insect remains and other debris from the gaps between the radiator heat exchanger plates. Take care not to damage the soft plates of the heat exchanger and do not cut your fingers on their sharp edges.
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