Automotive Belts & Hoses
Checking your belts and hoses and replacing them
before they wear out, may just save you from
being stranded and stuck on the side of the road.
Belts & Hoses
Belts—Serpentine, Timing, Fan, Drive Belt (V- Belt) Hoses—Heater, Lower Radiator, Upper Radiator
How to inspect belts and hoses
A belt or hose failure can cause an overheated engine, loss of power steering, or loss of the electrical charging system. If a hose leaks or the belt turning the water pump snaps, the cooling system is inoperable.
Overheating can occur anytime, but usually happens in the summer when temperatures are higher, and the heat can accelerate deterioration of rubber compounds.
Coolant and heater hoses
Hoses are the cooling system’s weakest structural component. Designed to hold coolant under high pressure, hoses are also subjected to fluctuating extremes of heat and cold, dirt, oils and sludge. Atmospheric ozone also attacks rubber compounds.
The most damaging cause of hose failure—electrochemical degradation (ECD)—isn’t easy to detect. ECD attacks hoses from the inside, causing tiny cracks. Acids and contaminants in the coolant can then weaken the material that reinforces the hose. Eventually, pinholes can develop or the weakened hose may rupture.