The driveshaft of a rear wheel or four-wheel drive vehicle is carefully assembled, precision balanced component that supplies power from the transmission to the rear center gears and then to each rear tire and wheel. Connecting the two sections of the driveshaft is a center support bearing, which is a "U" shaped metal bracket with a solid-rubber machined bearing on the inside. The bearing is designed to keep both parts of the driveshaft solid in order to reduce harmonic vibration as the vehicle accelerates. Although its design and purpose is incredibly simplistic in nature, replacing a driveshaft center support bearing is not one of the easiest jobs to complete. The main reason why many DIY mechanics struggle with driveshaft center support replacement due to the details involved with reassembly of the driveshaft.
Toll Free: Fax: Contact Us. Shop by Category. Advanced Search. Mailing List Enter your e-mail address to receive our newsletter. While the driveshaft allows for movement of the rear end there are also important operating angles and shaft length criteria that must be adhered to.
But for most applications, there will be some offset.
The combined angles should not exceed 5 degrees. A simple method that can be employed to ensure that the trans output shaft and pinion are parallel is to place a digital angle finder on a machined surface of the engine block i. Using a floor jack, raise the front or rear of the car as needed to bring the angle finder to zero note: if the rear needs to come up jack under the housing.
Tighten all bolts to manufacturers recommend torque pressure settings. Verify that all bolts and nuts are tight before proceeding. Fourth, reattach front of driveshaft to the transmission output shaft, again verifying the alignment marks previously made.
Fifth, grab the front driveshaft where it attaches to the center support bearing and verify that it is securely fastened.
Complete the same check with the rear driveshaft. Step Remove all tools, used parts and materials from under the vehicle. This includes jack stands from each wheel; place the vehicle back onto the ground. After you've successfully replaced the center drive bearing, you'll want to test drive the vehicle to ensure the original problem has been fixed.
The best way to complete this test drive is to plan your route first. Make sure you drive on a straight road with as few bumps as possible. It's OK to make turns, just try to avoid twisty roads at first. Step 3: Watch for old symptoms. Make sure to accelerate to a speed where the vehicle will be placed into the same scenario where the original symptoms were noticed. If you've properly diagnosed and replaced the center support bearing, you should be good to go. If however, you've completed each step of the above process and still are having the same symptoms as you originally had, it would be best to contact one of our experienced mechanics from YourMechanic to help you diagnose the issue and make appropriate repairs.
Engine oil is the lifeblood of the engine. The oil resides in the oil pan, which is under the car attached to the bottom of the engine. All internal moving parts of the engine need to be lubricated by the engine oil. Inadequate lubrication will cause the parts to wear out faster and eventually lea Our certified mobile mechanics make house calls in over 2, U.
Fast, free online quotes for your car repair. Note : Since all vehicles are unique, it's important to understand that the guidelines and instructions listed below are general instructions. Make sure to verify specific instructions with your vehicle manufacturer service manual before proceeding.
Part 1 of 5: Determining the symptoms of a bad driveshaft center support bearing The driveshaft is a precision piece that is balanced perfectly before it is installed by the factory.
Part 2 of 5: Physically inspect the driveshaft center support bearing Once you've properly diagnosed the problem and you're fairly certain that the cause is due to a worn out center support bearing, the next step is to physically inspect the part.
Materials Needed Eye protection Flashlight Gloves Piece of chalk or marker Roller or creeper if the vehicle is not on a lift Step 1: Put your gloves and eye protection on. Warning : As noted above, the driveshaft is carefully balanced and needs to be removed in order to replace the center support bearing. Failure to reattach the driveshaft on front and back, precisely where they came from will result in an unbalanced driveshaft that will vibrate and may cause serious damage to the transmission or rear end gears.
Part 3 of 5: Securing the correct parts and prepare for replacement After you've correctly determined that the center support bearing is damaged and needs to be replaced, you need to prepare for the replacement.
Drive shaft hook up
Let the penetrating oil sit for 10 minutes before removing proceeding to next step. Part 4 of 5: Replace the center support bearing Materials Needed Brass center tap Combination wrench set and extensions Grease Replacement center support bearing Replacement clamp Rubber or plastic tipped hammer Socket wrench set Work light Note : Check with manufacturer on recommended grease for bearings on your particular vehicle. Warning : Do not attempt to replace inner bearing only. Carefully unscrew this and slide behind the rubber boot for future use.
Warning : If you remove the clamp all the way, it will be very difficult to correctly replace it; which is why it's recommended above to buy a new replacement clamp that you can reinstall to attach the rear driveshaft to the center support bearing. Warning : Improper installation of the center support bearing can lead to serious damage to the transmission, rear gears, and axles.
When in doubt, contact a local ASE certified mechanic or machine shop to professionally install the center rear bearing.
First, reattach the center support bearing to the frame. Verify that all bolts and nuts are tight before proceeding Fifth, grab the front driveshaft where it attaches to the center support bearing and verify that it is securely fastened. Complete the same check with the rear driveshaft Step Remove all tools, used parts and materials from under the vehicle.How to Connect a PTO
Part 5 of 5: Test drive the vehicle After you've successfully replaced the center drive bearing, you'll want to test drive the vehicle to ensure the original problem has been fixed. Step 1: Start the vehicle. Let it warm up to operating temperature. Step 2: Slowly drive onto the road. Ease onto the accelerator to gain speed. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details.
Related Articles. Related Questions. Noisy grinding sound when turning wheels left or right This is a common sign of worn out wheel bearings. Bearing noise can sound a lot like a brake pad dragging or grinding.
How to Replace a Driveshaft Center Support Bearing
It can also sound like whirring, whining or humming depending on how much sound deadening material your Drive Shaft out of balance. Negative effect Hello, thanks for writing in about your Ford Explorer. The vibrating drive shaft can cause premature bearing failure in the rear end and the transmission tail shaft.
This works similarly to a farm tractor that has a drive shaft on the rear for an accessory. The farmer can hook up a lawn mower attachment to the shaft one day to. There's more than meets the eye when it comes to setting up and measuring for a U-joint equipped drive shaft. While the driveshaft allows for movement of the. mounted pump be used to eliminate the auxiliary driveshaft whenever .. (See Fig 1). The connecting driveshaft operates with an angle at each universal joint.
You should take it to a driveshaft shop or have it serviced by Safety while jacking up the car It depends on where you are jacking the car. If you are doing it on a perfectly flat surface, you jack it up and then put the jack stands on and let them down, it's fine.
Don't jack it up Need Help With Your Car? Please help improve this article by adding citations to reliable sources.
This works similarly to a farm tractor that has a drive shaft on the rear for accessory. The farmer can hook up a lawn mower attachment to the shaft one day to cut. A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft is a mechanical component for transmitting torque and rotation, usually used to connect other components of a drive train that. In British English, the term "drive shaft" is restricted to a transverse shaft that transmits power to the wheels, especially the front wheels. A drive shaft connecting.
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