Group 26, Steer Axle
26-2-4 • Steering Axle Wheel Bearing maintenance and Adjustment SM 765, Dec ’06
8. Install the outer wheel bearing after it has been
packed with grease.
9. Install bearing washer and hand tighten wheel nut.
10. Rotate hub or wheel counter clockwise and torque
wheel nut to 27-31 N⋅m (20-23 ft-lb).
11. Back wheel nut up until it is loose.
12. While turning the hub or wheel counter clockwise,
torque the wheel nut to 2.3-2.8 N⋅m (1.7-2 ft-lb).
13. Back up wheel nut to nearest slot and install new cot-
ter pin. Bend cotter pin tabs.
14. Recheck for correct bearing adjustment by rotating
the wheel by hand. Wheel should rotate freely or
with only slight “drag”. Readjust bearings by adjust-
ing wheel nut as necessary to avoid binding in bear-
ings.
15. Pack the area around wheel nut with grease.
16. Refit O-ring on hubcap and install hubcap by tapping
into place with a rubber or plastic-faced hammer.
Wheel Bearing Adjustment
The steer wheel bearings are retained and adjusted by the
wheel nut.
N
TE
You should clean and repack the wheel bear-
ings before performing a wheel bearing
adjustment. See “Wheel Bearing Lubrica-
tion” in this Section for the complete proce-
dure.
CAUTION
!
SAFE PARKING. REFER TO PAGE 1.
1. Make sure the truck is parked on a level, hard sur-
face, the upright is fully lowered, the drive wheels
are chocked, and the steer wheels are jacked and
blocked securely. Refer to “Lifting, Jacking, and
Blocking” for safe procedures.
2. Remove hubcap.
3. Remove and discard cotter pin.
4. Loosen wheel nut.
5. After wheel nut is loosened, hit the top of wheel to
loosen the bearings. This moves the bearings free of
their seated, running position.
6. Rotate hub or wheel counter clockwise and torque
wheel nut to 27-31 N⋅m (20-23 ft-lb).
7. Back wheel nut up until it is loose.
8. While turning the hub or wheel counter clockwise,
torque the wheel nut to 2.3-2.8 N⋅ m (1.7-2 ft-lb).
9. Back up wheel nut to nearest castellation slot and
install new cotter pin.
10. Recheck for correct bearing adjustment by rotating
the wheel by hand. Wheel should rotate freely or
with only slight “drag”. Readjust bearings by adjust-
ing wheel nut as necessary to avoid binding in bear-
ings.
11. Bend cotter pin tabs over.
12. Pack the area around wheel nut with grease.
13. Refit O-ring on hubcap if removed or replaced and
install hubcap by tapping into place with a rubber or
plastic-faced hammer.
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