6 - Maintenance
60
Every 250 hours - Wheel bearings
Check the play in the wheel bearings:
1. Put chocks in front of and behind the left wheel and raise the right
hand wheel.
2. Shake the right hand wheel to check the play in the bearings.
3. If there is play, chock under the axle to prevent the sprayer falling
off the jack.
4. Remove hub cap (A) and pin (B). Turn the wheel and tighten shaft
nut (C) until slight resistance is felt in the rotation of the wheel.
5. Loosen the shaft nut until the first notch (horizontal or vertical) is
aligned with the hole for the pin in the shaft.
6. Insert a new pin and bend it.
7. Replace the hub cap.
8. Do the same for the left hand wheel.
Every 1,000 hours - Wheel bearings (unbraked)
Check the condition of the bearings, as follows:
1. Put chocks in front of and behind the left wheel and raise the right
hand wheel.
2. Place stands under the axle.
3. Remove the wheel.
4. Undo the six Allen screws and remove hub cap (A), pin (B) and
shaft nut (C).
5. Remove hub (D). Use a hub extractor if necessary.
6. Remove bearings (E), clean them with a degreasing product and
then dry.
7. Check for wear and discolouration of the ball bearings; replace them if they are in poor condition.
8. Re-fit hub (D) and bearings (E) using a new gasket (F).
9. Grease hub (D) and bearings (E) before fitting them on the shaft.
10. Fit shaft nut (C). Turn hub (D) and tighten nut (C) until slight resistance is felt.
11. Loosen shaft nut (C) again until the first notch is aligned with the hole for the pin in the shaft.
12. Insert new pin (B) and bend it.
13. Re-fit hub cap (A) on hub (D). Slightly tighten the six Allen screws.
14. Re-fit the wheel and tighten the nuts. See "Every 50 hours" for the tightening torques and order. Start by tightening all
the bolts to half the indicated torque and then to the full torque.
15. Tighten again after ten hours of use. Check the torque every day until it stabilises.
IMPORTANT! The shaft has a vertical hole and a horizontal hole for the pin. Use the first hole that aligns with the notch
when you loosen the shaft nut.
±
WARNING! If you do not feel sufficiently competent to change the wheel bearings, contact your HARDI EVRARD
dealer.
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