What direction does a bearing seal go in?
A seal must always be installed so that the sealing lip is facing the fluid to be sealed. This is because the lip is made so that pressure applied to it from the “wet” side of the seal will tend to increase the pressure the lip applies to the shaft.
How tight should a hub bearing be?
For context, the tolerable end-play for truck wheel bearings is the same: 0.001 to 0.005 inches, also expressed as 1 to 5 mil or 0.025 to 0.127 mm. In other words, it’s perfectly acceptable to adjust wheel bearings so that they are just a little bit loose, but not too loose.
Can you install a wheel bearing wrong?
It is possible that an improperly installed wheel bearing, or a faulty wheel bearing could cause this type of damage. Other possible causes are the CV axle, balljoint failure, or strut mount failure.
How do you install new bearings?
When installing the bearings, order is important. You must drop the inner bearing in first, then install the bearing seal to trap it in place, then slide the entire hub assembly onto the spindle, then slide the outer bearing into place, and then trap it with the spacer and nut.
Which way does a double lip seal go?
Orient your seal the same way as the initial install. The sealing lip should face the lubricant that requires sealing. The second lip on a double lip oil seal is intended as a dust lip. The seal must be installed at a 90°, or perpendicularly, to both the shaft and housing bore.
Which way should a grease seal face?
For oil, the lip should face inward along the shaft to hold in the oil. For greased bearings, the lip usually faces outward to allow the grease to purge.
How tight should a bearing nut 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.
Do you need to grease wheel bearing hub assembly?
Although these bearings can reduce the amount of friction between the moving parts, the bearings must be lubricated periodically to enable maximum life of the assembly.
How do you heat a bearing for installation?
A good general rule of thumb is to heat bearings to a temperature 150 F greater than shaft temperature. This is sufficiently warm to allow the bearing to slide over the shaft while not hot enough to damage any components. In any case, do not heat open bearings above 250 F.