Your car’s driveshaft is a very important part of the car’s driveability. Essentially, it transmits the torque from your car’s transmission to the wheel axles. Precisely where that power is distributed depends on the type of car you have. If you have a front-wheel drive, power from your transmission will be sent to the two front wheels. Meanwhile, if you have a car that has a rear-wheel drive, power will be sent to the back wheel axles. On occasion, you may come across two driveshafts if you have a four-wheel-drive car or truck.
Located in places that may be difficult to navigate to on your own, a driveshaft has to be measured. You may need to replace it or any other part of your vehicle. In order to do this, it needs to be measured correctly. Here are some tips that will show you how to measure a driveshaft.
What You Will Need
There are a few materials you will need to gather in order to do this properly. Those items include a flashlight, hydraulic floor jack, jack stands, paper and pen, steel tape measure and wheel chocks. In order for this process to be simple and easy, you have to jack your car up high enough so that you have enough room to work underneath it. Raise the back end of your car using the floor jack and make sure you place your jack stands near the rear axel.
The first step is to make sure your car is secure. Park your car somewhere on unyielding, level ground. Be sure that you put on the emergency brake. To ensure your car does not slide, put your wheel chocks against a front tire in a way that ensures it will not move. Putting your wheel chocks against the front tire will prevent the car from rolling since the emergency brake on most cars holds the rear wheels.
Use your hydraulic floor jack to lift your vehicle. Make sure that you know the right lifting point located under the rear of your car. You want to make sure that you are placing the jack in the right place so you do not accidentally damage your car. Finding the right lifting point is also crucial if you do not want your car to slide off the jack while it is being lifted. Having trouble trying to locate this? Turn to your owner’s manual.
Keep in mind that while you are lifting a vehicle with a jack, make sure that it stands below the car to support it before you start working. Doing anything else can be extremely dangerous. Now it is time for your jack stands to shine. Place them securely under the rear axle. While you are measuring your driveshaft length, remember to keep the weight of your car on the rear suspension as this could impact the distance between your transmission and the pinion flange.
How you measure the driveshaft of one car is going to be different than the way you measure the driveshaft of another car. Measure the space between the two flanges if your car has a flange mounted on the back of your transmission as well as a flange on the differential. On the other hand, measure the distance between the end of the transmission shaft to the center of the rear u-joint if you have a car that has a driveshaft that slides onto the transmission output shaft.
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