Certain engines with overhead camshafts have timing belts that have a limited life span. Car makers use these belts instead of more durable chains because chains are noisier and cost more to manufacture. Your vehicle owner’s manual will recommend at what mileage the timing belt must be replaced. These intervals range from every 60,000 miles to every 105,000 miles. To see what is recommended for your engine, click on the link at the bottom of this article.
The job of the timing belt is to turn the camshaft(s) at exactly 1/2 the speed of the crankshaft while maintaining a precise alignment. This means that the crankshaft will make two revolutions for every revolution of the camshaft. Engines will have at least one camshaft, or as many as four camshafts in some of the V-type engines. The camshaft causes the intake and exhaust valves to open and close in time with the pistons which move up and down in the cylinders. The valves must open and close at exactly the right time in relationship to the piston movement in order for the engine to run properly. For more information on how this works, go to “A Short Course on Engines
There are two types of engines that use timing belts. They are described as: “Interference Engines” and “Non-interference Engines” The difference lies in the proximity between the valves and the pistons. On an interference engine, if the timing belt slips even one notch, the piston can crash into an open valve causing serious engine damage by bending valves and breaking pistons. Non-interference engines will usually not self destruct, but in either case if the belt fails, the engine will immediately shut down leaving you stranded. The link at the bottom of this article will tell you which category your engine falls under.
Timing belts fail without warning and on some vehicles, are almost as hard to check as they are to change. In most cases, your only protection is to change the belt at the recommended intervals. Timing belt replacement is not a cheap job but it is far less costly than the alternative.
Some technicians may recommend that you replace the water pump during a timing belt job even if there is nothing wrong with it. This is because 90% of the labor to change the water pump has already been done with the timing belt job and some technicians consider it good insurance to replace the pump at this time. My feeling is that some water pumps can last the life of the car but many do fail and will cost big money to replace at a later date. So ask your technician what his experience is with the water pump on your model car and look at how long you plan to keep the car. This way, at least you will be making an informed roll of the dice.
Avialablty At Umar Farooq Belting
Available : neoprene (CR) and hydrogenated NBR (HNBR)
Automotive Timing Belt Mold List (List data adjusted after 6 month)By UFB
Also Available: R(MR) Y(MY) RU YU ZA ZB ZC ZD ZAS RHD SHX SRP on Umar Farooq Belting
Automotive Timing Belt Mold List (List data adjusted After 6 month)by UFB
Automotive Timing belt raw materials: high-quality Japanese imports of neoprene (or hydrogenated nitrile rubber) as the main raw materials, distribution of the supplies, a variety of different uses; skeleton materials for the Japanese import quality glass fiber cord; nylon belt tooth surface 66 high elastic fabrics do protection, and in strict accordance with the technical specifications produced. A look clean, full profile, long service life, low noise characteristics.Characteristics Automotive Timing belt Neoprene synchronous belt: Heat is good – can be at 120 ° C and below, the working environment and long-term use; Anti-aging is good – especially ozone-resistant properties must gifted; Good chemical stability: In addition to strong oxidizing acid, the chemical resistance of the general erosion; Fire water-resistant properties well;Hydrogenated nitrile rubber band: Oil resistance excellent – oil resistance with very low inflation, higher oil resistance; Durability good – dynamic performance than chloroprene rubber belt for the gifted, is the first choice in the luxury car drive belt; Wear properties gifted – wear than small chloroprene rubber belt to reduce the noise, effectively extending the service life of the belt; HNBR Automotive Timing belt in the application: Hyundai Motor because of energy-saving, environmental protection, comfort, and security requirements increasing, making the whole engine room structure complex, compact, high working temperature, the rubber pieces which should have high temperatures performance. With the improved engine lubrication technology, the lubricants used in a new additive, in the engine oil resistance of the rubber pieces to a higher demand. On the other hand, long maintenance period, the durability of rubber pieces there are increasingly high requirements. Hyundai Motor rubber pieces require oil resistance in certain conditions in the -40 ° C to +150 ° C transmission belt is the important automotive rubber parts, including OHC engine when used with the regulation that is synchronous belt, automotive auxiliary drive V-belt use in cars and multi-wedge zone and the newly developed CVT institutions (CTV) by the variable V-belt. Since 1975 HNBR announcement of the first patents, HNBR is becoming today’s world car production preferred standard synchronous belt elastomer material.
Modern cars on the synchronous belt specific requirements: Durability increase 1.5 times higher than the bandwidth reduced 20%; increased 10 ° C heat. Synchronous belt by the rubber, and fiber tensile body (fiberglass or Kevlar), and composed of nylon cloth tooth complex. HNBR manufactured synchronous belt whether fatigue life, or the water-resistant properties than chloroprene rubber and chlorinated polyethylene manufacturing synchronous belt performance much better.