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OM-659 Page 9
3-8. Torquing Wheel Bearings
FALLING EQUIPMENT can cause
serious personal injury and equipment
damage.
• Use equipment of adequate capacity to lift unit.
• Do not put any body part under unit while lifting or
working on bearings.
INCORRECT BEARING MAINTENANCE
can cause loss of control resulting in
serious injury and equipment damage.
• Check and repack wheel bearings once a year or
every 12,000 miles (19,500 km), whichever comes
first.
WARNING
rwarn1.1* 2/94
Ref. ST-800 441-A
Torque wheel bearings whenever
hub nut is removed or hub is too
loose.
Repack bearings according to
Section 3-7.
Torque nut while turning hub forward. Turn nut until “just loose.”
Install new cotter pin and bend ends around nut. Install cap.
Install wheel (See Trailer Towing Safety Precautions) and
recheck endplay.
Check hub endplay. If loose,
remove wheel and go to next step.
Remove cap and cotter pin.
Tools Needed:
0.01 in (0.2 mm)
endplay maximum
Torque to 12 ft lb
(16 N·m)
Loosen nut further until first slot
in nut aligns with hole in spindle.
Do not loosen nut
more than 1/6 turn in
this step.
Pin must not
rub on cap.
13/16, 1-1/8 in
13/16, 1-1/8 in
Figure 3-9. Torquing Wheel Bearings