V-BELTS

As power transmission experts for over a century, Gates is driving your vehicles’ belt drive with our automotive V-belts for your passenger cars, light duty trucks, and personal vehicles. Gates V-belts are engineered to run maintenance-free to keep your vehicles moving without the need for lubrication or retensioning. We’ve designed our V-belts for wear, corrosion, and heat resistance with OE quality fit and construction for reliable, long-lasting performance.

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Coolant and Heater Hoses

Hoses are the cooling system’s weakest structural component. They are made of flexible rubber compounds to absorb vibrations between the engine and radiator, or, in the case of heater hoses, the engine and the body’s firewall. Designed to hold coolant under 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. According to engineers for the Gates Corporation, a parts maker, ECD attacks hoses from the inside, causing tiny cracks. Acids and contaminants in the coolant can then weaken the yarn material that reinforces the hose. Eventually, pinholes can develop, or the weakened hose may rupture from heat, pressure, or constant flexing.

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Some easy, basic maintenance can help prevent coolant hose failure:

• Check the white coolant-recovery tank often to ensure proper fluid level. Marks on the tank indicate the proper level for when the engine is cold or hot. If the tank is low after repeated fillings, suspect a leak. Also check for white, light green, blue, or pink coolant tracks in the engine bay, which is residue left from leaking coolant.
• When the engine is cool, squeeze the hoses with your thumb and forefinger near the clamps, where ECD most often occurs. Feel for soft or mushy spots. A good hose will have a firm yet pliant feel.
• Inspect for cracks, nicks, bulges (usually while hot); or a collapsed section in the hose and oil contamination; or fraying near the connection points.
• Look for parallel cracks around bends (caused by ozone), a hardened glassy surface (heat damage), or abrasive damage (hose is rubbing).
• Flush and replace the coolant according to the owner’s manual. Clean coolant is less likely to support ECD.
• Never remove the radiator cap when the engine is hot, as the hot coolant will be under pressure. Also, be aware that an electric cooling fan can come on at any time.

Accessory Belts

Many of the same elements that attack hoses also attack belts—heat, oil, ozone, and abrasion. Almost all cars and trucks built today have a single multi-grooved serpentine belt that drives the alternator, water pump, power-steering pump, and air-conditioning compressor. Older vehicles may have separate V-belts that drive the accessories. The Car Care Council says chances of a V-belt failure rise dramatically after four years or 36,000 miles, while the critical point for a serpentine belt is 50,000 miles. Any belt should be changed when it shows signs of excessive wear. But many new composite belts don’t show signs of wear until the failure occurs.

Here are tips for inspecting belts:

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• Look for cracks, fraying, or splits on the top cover.
• Look for signs of glazing on the belt’s sides. Glazed or slick belts can slip, overheat, or crack.
• Twist a serpentine belt to look for separating layers, cracks, or missing chunks of the grooves on the underside.