If you don't set your timing belt correctly, being late or early means your engine won't run efficiently and you run the risk of damaging your engine. If you don't set your watch right, you may be late or early. Lining up your timing marks is similar to setting your watch. Once you have the tension right, you need to confirm all your timing marks are lined up. Always refer to your technical manual for exact tension specifications. This makes your car less efficient and creates the possibility that your pistons and valves will collide. A belt that is on too tight will not last as long a belt that is on too loose may skip or jump and fail to keep proper time. Just like a bandage that can cut off circulation if it's too tight or not provide enough protection if it's too loose, there's a middle road to take with tension. Put everything back together, following the reverse of the steps in the previous section.įrom these steps, the most important ones and those that deserve further discussion are the adjusting of tension and lining up of the timing marks.Install a new timing belt and tensioner, making sure to properly align the timing marks as you do so.Again, make sure the engine is set to top dead center, which will make confirmation of the timing marks easier.Continue to the next section to learn what steps to take, as well as the significance of setting tension and lining up your timing marks. Next up is installing that new timing belt. Once you reach this point, you're halfway there. Once the tensioner is off, the belt comes off.Remove the freed tensioner and tensioner spring.Remove the main adjustment bolt for the tensioner.Remove the bolt that holds the tensioner and timing belt cover. Mark the location of the main tensioner bolt.Remove the crankshaft pulley and vibration damper. There's a mark showing TDC on the pulley and the engine. Rotate engine to top dead center (TDC), which means that the first piston in an inline engine is at the top. Place a socket on the center of the crankshaft pulley.Remove the bolts holding the upper timing belt cover.Disconnect all cooling hoses from engine and label for easy reassembly.Remove cooling fan and any plastic fan coverings from the front of the engine (usually reverse-threaded, so turn right to loosen).Remove any plastic shields from underneath the engine.Make sure the transmission is in neutral.Disconnect the negative terminal of the battery for your safety.Jack up the car and support it on jack stands.Refer to your manual for all proper safety procedures.Now that you have your tools lined up and service manual handy, let's take a look at how to remove your old timing belt. Therefore, perhaps the most valuable tool of all during a belt replacement is a technical manual from a reputable automotive maintenance publisher, such as Chilton or Bentley Publishers. Procedures, tools and belt type needed for timing belt replacement vary depending on vehicle make and model. Depending on your vehicle's make and model, you may also need a harmonic balancer puller or three-jaw gear puller to remove the crankshaft pulley if it doesn't just slide off.Īnd, as with most auto maintenance procedures, one size doesn't fit all. In addition to these tools, you will also need some materials specific to timing belt replacement, such as a new timing belt, timing light, timing belt cover gasket set, belt tension gauge, and bolts or pins to hold the camshaft position during your work. Read on to learn about the wear of your belt, typical tools needed in a repair and how to replace it. Instead, you can act as the band director and keep that timing belt in check by watching its wear and arming yourself with the knowledge to replace it. So we've all accepted the timing belt's importance, but that doesn't mean you have to spend your days worrying that your belt will force you to pay a large maintenance bill. Be sure to check your vehicle's maintenance manual to see what your car or truck's manufacturer suggests. Therefore, it's important to stay ahead of your belt's lifespan - traditionally replacing it every four years or 60,000 miles (96,561 kilometers) or, in newer vehicles, every 100,000 miles (160,934 kilometers). Obviously, this is bad news for vehicle maintenance as this internal collision can cause destruction fair amount of engine damage. Without it, the pistons and valves would collide. The timing belt links the two in harmony. The camshaft opens and closes the engine's valves to allow air and gas in and out of the engine. So why is this important? The crankshaft converts linear energy from the pistons, which move up and down, into rotational energy that eventually turns the wheels.
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