Nissan 21503-40F65 Hose-Bottom

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The upper and lower rubber hoses that connect the top radiator hose with the engine, as well as all heater hoses, should be checked for signs of wear, cracks, leaks and or loose hose clamps every 15, 000 miles or 12 months. Also, the front of the radiator must be inspected, so that dust, bugs, or leaves clogging the area be cleared out. It must be noted that ethylene glycol present in the coolant is attractive to pets and if the animal drinks sufficient amounts of it, it can prove to be lethal; coolant must always be drained into a container with a lid and reused if it is not contaminated or if it is not older than several years. The engine should also be off and cool before the radiator cap is unscrewed to allow the draining of the coolant unto a container for re-use. Spare hose clamps should be released while the spare hoses can be disconnected by either cutting or twisting at the radiators and engine coolant inlets. When attaching new hoses, recommended tightened force which squeezes the clamps must not be applied excessively since this can be destructive to the hose or the radiator neck. Finally, once the coolant is in the radiator, it should be run with the cap on and the level of coolant should be checked once the engine is warm , usually for 5-7 minutes. It is recommended not to leave hose clamps in the car when the radiator hose has been replaced.