Common Knowledge about Front Wheel Bearings (2)

Aug 9
17:29

2013

Olivia Tong

Olivia Tong

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Since front wheel bearings are not sealed bearings, you must pack grease into them, either by hand or by machine, before they can be used.Now that we know a little about front wheel bearings, let's see how they impact the way our Mustangs drive and stop!

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Since front wheel bearings are not  sealed bearings,Common Knowledge about Front Wheel Bearings (2)    Articles you must pack grease into them, either by hand or by machine, before they can be used.Now that we know a little about front wheel bearings, let's see how they impact the way our Mustangs drive and stop!

 

As I stated earlier, many of our handling and braking questions end up being answered by front wheel bearing problems. These problems usually occur after new front wheel bearings have been installed.

 

There are two reasons for this. The loose race was not seated all the way into the bottom of the hub or the wheel bearings were not tightened properly when they were installed. Remember I said that the faces of the bearing races were tapered? Because of this taper, the front wheel bearings must be "loaded" when the brake drum or rotor is installed. Loaded simply means that the nut, which holds the brake drum or rotor to the spindle, is tightened the proper amount. The tighter the

nut is, the more inward force is put on the bearings. Too much force is bad. Too little force is also bad. The trick is to get to the middle ground. Front wheel bearings being too tight or too loose impacts the driving and braking of your Mustang as well as wheel bearing life.

 

If your front wheel bearings are overtightened, the bearings have to run under too much pressure. This results in friction which causes heat, and lots of it! Heat leads to premature bearing wear and early failure. It heats the grease up to the point where it can actually run out of the bearing. If left undetected, the heat can damage not only the wheel bearing, but the spindle and the hub, too. Also, since the tire and wheel is harder to turn, gas milage can be reduced. It's like having the front brakes slightly on all the time. If one side is too tight and one side is too loose, the car will pull to the tight side during normal driving and braking. If one side is too tight and one side is too loose, the car will pull to the tight side during normal driving and braking.

 

 

To check to see if your front wheel bearings are too tight, jack the car up and, with the tire off the ground, grab the tire and spin it. It should make a couple of revolutions before stopping. You should also hear the brake drag slightly on the drum or rotor. If it doesn't make one full revolution, make sure the brake isn't too tight.

 

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