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 TM 9-2330-326-14&P
Typical failure modes in tapered wheel bearings include:
1.
Improper bearing adjustment (see page H-92)
Clearance not within specs
2.
Misalignment (see page H-93)
Bearing centerlines do not line up
3.
Contamination (see page H-94)
Metal, abrasive particles, or moisture
4.
Improper lubrication (see page H-95)
Wrong viscosity
Insufficient amount
Degraded lubricant
5.
Installation damage (see page H-95)
Wrong tool or no tool used
Hammering on bearing components
6.
Impact loads (see page H-96)
Improper installation
Severe service
Hitting curbs or potholes
7.
Other damage (see page H-97)
Poor fit
Electric arcing
Service fatigue
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