Hardi COMMANDER TWIN FORCE Series, Instruction Book

Page: 71 / 110

6 - Maintenance
6.7
WARNING! Hoses for boom lifting device must be changed after every 5 years of use.
See section “Occasional maintenance”.
Check the hydraulic circuit for leaks and repair if any.
Check all hoses and tubes for possible damages and proper attachment. Renew damaged hoses or tubes.
If too much play is found in the steering section it must be re-tighte-
ned. This applies to both steering and non-steering versions. Re-
tighten the nuts on both sides to the specified torque. Specified
torque is 250 Nm.
Be sure that the split pin is fitted (or re-fitted if dismounted) at the
end of the big bolts.
Check for play in the wheel bearings:
1. Place stop wedges in front of and behind LH wheel and jack up
RH wheel.
2. Rock the RH wheel to discover possible play in the bearings.
3. If any play, support the wheel axle to prevent the trailer from fal-
ling down from the jack.
4. Remove hub cap (A) and cotter pin (B). Turn the wheel and
tighten the castellated nut (C) until a slight resistance in the wheel
rotation is felt.
5. Loosen the castellated nut until the first notch - horizontal or ver-
tical - is aligned with the cotter pin hole in the shaft.
6. Fit a new cotter pin and bend it.
7. Fill the hub cap with fresh grease and screw it on to the hub
again.
8. Repeat the procedure on LH wheel.
250 hours service - Wheel bearings
250 hours service - Hoses and tubes
250 hours service - Hydraulic circuit
250 hours service - Readjustment of the boom
100 hours service - Check/tighten steering