Hardi COMMANDER TWIN FORCE Series, Instruction Book

Page: 74 / 110

6 - Maintenance
6.10
Check the condition of the bearings and brake wear parts in the fol-
lowing 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. Unscrew the 6 Allen bolts and remove the hub cap (A), cotter pin
(B) and castle nut (C).
5. Pull off the wheel hub and brake drum assembly. Use a wheel pul-
ler if necessary.
6. Vacuum clean the brake drum (D) for brake dust or rinse with
water.
7. Rinse the remaining parts on the brake carrier plate with water
and dry them.
8. Remove roller bearings (E), clean all parts in degreasing detergent
and dry them.
9. Check the brake drum diameter and lining thickness - renew if
worn.
Max. wear rates on brake components:
Max. drum diameter:
For 3200 sprayers: 302 mm (11.8897 in)
For 4400 sprayers: 402 mm (15.8388 in)
Min. lining thickness:
For 3200 sprayers: 2.0 mm (0.07874 in)
For 4400 sprayers: 4.0 mm (0.15748 in)
1000 hours service - Wheel bearings and brakes