6 - Maintenance
6.6
1000 hours service - Wheel bearings
Check the condition of the bearings in the following way:
1. Place stop wedges in front of and behind LH wheel and jack up RH
wheel.
2. Support the trailer with axle stands.
3. Remove the wheel.
4. Remove the hub cap (A), cotter pin (B) and castle nut (C).
5. Pull off the wheel hub assembly. Use a wheel puller if necessary.
6. Remove roller bearings (D), clean all parts in degreasing detergent
and dry them. Replace if worn or damaged.
7. Fill the hub and bearings with fresh grease.
8. Assemble the hub and bearings using a new sealing ring (E).
9. Fit castle nut. Rotate hub and tighten castle nut until a slight rotation resistance is felt.
10. Loosen castle nut again until the first notch is aligned with the cotter pin hole in the shaft.
11. Fit a new cotter pin and bend it.
12. Fill the hub cap with fresh grease and carefully press it onto the hub.
13. Replace the wheel and tighten the wheel nuts (See “50 hours service - Wheel bolts and nuts” for torque settings).
14. Tighten again after 10 hours of work. Check the torque every day until it is stabilized.
ATTENTION! The shaft has a vertical and a horizontal cotter pin hole. Use the one first aligned with the notch when
loosening the castle nut.
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WARNING! If you do not feel totally confident changing wheel bearings, contact your HARDI® dealer’s workshop.
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