with no more than 15 to 20 ft. lbs. of torque while rotating the wheel to make sure the bearings are seated.
How tight should a wheel bearing be?
The nut on the spindle should be tightened until snug , with no side-to-side play in the hub and then backed off, about a quarter of a turn. The nut finger should be tight until the castle nut or cotter pin is used.
How do you torque a wheel hub nut?
Lubricate the wheel bearing with clean lubricant of the same type used in the axle sump or hub assembly. Tighten the adjusting nut to a torque of 200 ft-lb while rotating the wheel hub assembly . Back the adjusting nut off one full turn. Re-torque adjusting nut to 50 ft-lb while rotating the wheel hub assembly.
What is the torque on a wheel hub assembly?
GM Automobile Torque Specifications
The torque specifications for GM wheel hubs generally range between 107 to 225 foot-pounds , depending on the year and model.
What is a torque bearing?
Bearing torque is the moment required to overcome internal friction to start or maintain rotation of one ring while the other is stationary . Bearing torque is the moment required to overcome internal friction to start or maintain rotation of one ring while the other is stationary.
What size socket do I need to remove a wheel bearing?
It’s a 4 MM !
Can you over tighten wheel bearings?
“Excessive preload will cause excessive friction and the bearing will run hot, compromising lubrication and eventually leading to flaking (material coming off) at the large end of the rollers/races,” he says. “On the other hand, adjusting the bearing too loose causes excessive looseness and vibration in the system.
Do you need to torque axle nut?
Proper torque is critical for two reasons. First, it secures the axle nut so it won’t work itself loose and back off . Second, the proper torque keeps the correct load on a hub assembly needed for longer bearing life. ... When you’re removing the wheel hub nut, you can use an impact wrench to speed up the job.
What are signs of bad wheel bearings?
- Humming Noise. The most easily identifiable and most common symptom of bad wheel bearings is an audible one. ...
- Squealing, Growling. ...
- Clicking Sound. ...
- Wheel Wobble. ...
- ABS Failure. ...
- Uneven Tire Wear. ...
- Vehicle Pulls to One Side. ...
- Steering Wheel Vibration.
How do you torque front wheel bearings?
Torquing the Wheel-Bearing Nuts on Front Non-Drive Steer Axles. Torque the inner nut to 100 foot-pounds with a torque wrench and a socket for the initial adjustment. Back off of the inner nut one complete turn. Turn the hub in a clockwise direction with your hands to free up restrictions from the wheel bearing.
What is the torque spec?
Recommended torque specifications are unique for each type of vehicle. ... By definition, torque refers to the amount of rotational force at the point of application . When attaching a wheel to a vehicle, torque specifications are the amount of force recommended on the hardware to ensure proper installation.
Which bearing is having high starting torque?
Roller bearings have a low starting torque and underpressurized sleeve (fluid-film) bearings have substantially higher starting torque. The coefficient of friction at start-up for self-lubricated bearings is highly variable.
How do you calculate bearing torque?
- You can calculate approximate figures for frictional torque using this simple formula:
- Radial ball bearings: 0.5 x 0.0015 x radial load in Newtons* x bearing bore (mm)
- Axial ball bearings: 0.5 x 0.0013 x axial load in Newtons* x bearing bore (mm)
Is torque a friction?
The torque can be affected by an opposing force that results from a resistant surface. This opposing force is referred to as friction. The frictional torque, therefore, is calculated as the difference between the applied torque and the resulting net, or observed, torque.
