1000 Hours Service - Wheel Bearings (No Brakes); 1000 Hours Service - Wheel Bearings And Brakes - Hardi NAVIGATOR 4000 Instruction Book

1000 Hours Service - Wheel Bearings (No Brakes)

Check the condition of the bearings in the following way:
1. Place stop wedges in front of and behind the left wheel and jack
up the right wheel.
2. Support the trailer with axle stands.
3. Remove the wheel.
4. Unscrew the 6 bolts and remove the hub cap (A), cotter pin (B) and
castle nut (C).
5. Pull off the wheel hub (D). Use a wheel puller if necessary.
6. Remove roller bearings (E). Clean all parts with a degreasing
detergent and wipe them.
7. Check roller bearings (E) for discolouration and wear. Replace if worn or damaged.
8. Assemble the hub (D) and bearings (E) using a new sealing ring (F).
9. Fill the hub (D) and bearings (E) with new grease, before fitting them to the wheel axle.
10. Fit the castle nut (C). Rotate the hub (D) and tighten the castle nut (C), until a slight resistance in the rotation is felt.
11. Loosen the castle nut (C) again, until the first notch is aligned with the cotter pin hole in the axle.
12. Fit a new cotter pin (B) and bend it to keep it in place.
13. Fit the hub cap (A) to the hub (D). Slightly tighten the 6 bolts.
14. Fit the wheel again and tighten the wheel nuts. See section "50 hours service" regarding torque wrench setting.
Tighten all bolts to half the specified torque at first, then tighten to the full specified torque.
15. Tighten again after 10 hours of work. Check the torque every day, until it is stabilised.
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ATTENTION! The wheel axle has a vertical and an 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, then contact your HARDI dealers workshop.

1000 Hours Service - Wheel Bearings and Brakes

Check the condition of the bearings and brake wear parts in the following way:
1. Place stop wedges in front of and behind the wheel opposite to
the one to be serviced (e.g.left wheel). Jack up the wheel to be
serviced (e.g. right wheel).
2. Support the trailer with axle stands.
3. Remove the wheel.
4. Unscrew the 6 bolts and remove the hub cap (A), cotter pin (B) and
castle nut (C).
5. Pull off the brake drum (D). Use a wheel puller if necessary.
6. Vacuum the brake drum (D) for brake dust, or rinse it with water.
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DANGER! Brake dust can cause severe health injuries! Avoid inhalation of brake dust! Wear a respirator when servicing
the brakes. Do not clean brakes with compressed air! Use a vacuum cleaner or rinse with water to avoid brake dust
being blown around.
7. Rinse the remaining parts on the brake carrier plate with water and wipe them.
8. Remove roller bearings (E), clean all parts with a degrease detergent and wipe them.
9. Check the brake drum diameter and lining thickness. Replace if worn.
Max. wear rates on brake components:
6 - Maintenance
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