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OM-699 Page 8
3-7. Torquing Wheel Bearings
Ref. ST-800 441-A
Y Loss of control hazard. To
prevent injury and damage,
check and repack wheel
bearings once a year or ev-
ery 12,000 miles (19,500
km), whichever comes
first.
Y Use proper equipment to
lift and support unit.
Y Do not put any body part
under trailer while lifting or
performing maintenance.
. Torque wheel bearings when-
ever hub nut is removed or
hub is too loose.
Repack bearings according to
Section 3-6.
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 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)
Further loosen nut until first slot
in nut aligns with hole in spindle.
13/16, 1-1/2 in
Y Do not loosen nut
more than 1/8 turn
in this step.
Y Pin must not rub on
cap.