BMW 11537545665 Thermostat Water Coolant Hose

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Hoses should be visually checked for proper clamping, proper wrapping if they are rubber wrapped, and air content by feel, as any damp feeling or weeping around the hose clamp or the hose itself or the connection could be a dried coolant which will look chalky. Carry out the visible and touch and feel check to ensure that hoses are firm and springy and to replace the hoses, which may be leaking by visible signs such as dripping, moist around clamps or connectors. When fitting / replacing coolant hoses, only use the recommended clamps. Seek out electromechanical deterioration, which can hardly be disclosed but can be felt when the hose is compressed as it is searched for. Said includes evidence of soft nature and bulge, especially where the oil has penetrated and resulted in abrasion, there is also wear or scuffing due to rubbing by the hard parts of the engine. Specific kinds of heat harm are internal and outer problems characterized by puffiness and leathery-healing zones. Ozone damage shows appearance of thin parallel splits on the outer part, which are not hard and are caused by atmospheric conditions. Also, as a preventive measure, recommended change interval for coolant hoses should be approximately 4 years.