TM-9-2330-326-14-P

SEMITRAILER, TACTICAL, DROP DECK BREAKBULK/CONTAINER TRANSPORTER, 22-1/2 TON, M871A3

TECHNICAL MANUAL; OPERATOR’S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL (INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST)

FEBRUARY 2006

TM-9-2330-326-14-P - Page 341 of 540

TM 9-2330-326-14&P

H-87

H-31. BEARINGS

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