Download Bearing self study guide

Wheel bearing
Double adjusting nut
Again, rotate the wheel and tighten the inner nut until there
is a slight bind and bearing surfaces are in contact. Then back off the inner
nut 1/4 to 1/3 turn and allow the wheel to rotate freely. Install a lockwasher,
and tighten the jam, or outer nut. There should be .001 ˝ to .010 ˝ of end
play. Lock the outer nut at this position (fig. 3).
Note: Some procedures call for the adjusting nut to be tightened
to specific torque specifications. Always check the manufacturer’s service
manual for specific recommendations.
This diagram shows a wheel bearing
adjustment with a double adjusting
nut.
(fig. 3)
With either adjustment method, proper procedures must be followed. If
not, bearing adjustment may be too tight or too loose, which can cause
overheating and damage the bearing.
Different devices for adjusting bearings are available such as torque
wrenches and dial indicators. Selection depends on the bearing type
and the application in which it’s being used. Basically, these devices hold
the bearing in proper position, support the race, provide the end play or
clearance needed and assure that the bearing is not misaligned, cocked or
operating improperly.
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