Hours Service - Hydraulic Circuit; Hours Service - Hoses And Tubes; Hours Service - Wheel Bearings - Hardi COMMANDER DELTA FORCE Instruction Book

6 - Maintenance

250 Hours Service - Hydraulic Circuit

Check the hydraulic circuit for leaks and repair, if needed.
Refill nitrogen accumulators for:
• ParaLift suspension (if fitted)
• Wheel axle suspension (if fitted)
• Yaw suspension (if fitted)
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WARNING! Hoses for boom lifting device must be changed after every 5 calender years of use.
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WARNING! Nitrogen accumulators may contain oil under pressure.

250 Hours Service - Hoses and Tubes

Check all hoses and tubes for possible damage and proper attachment. Replace damaged hoses or tubes.
In general, a hose or tube should always be replaced, if
• it is leaking
• reinforcement material inside the hose is visible due to cracks in the outer layers.

250 Hours Service - Wheel Bearings

Check for play in the wheel bearings:
1. Place chocks in front of and behind the left wheel and jack up the
right wheel.
2. Support the trailer with axle stands or strong trestles.
3. Rock the right wheel to discover possible play in the bearings.
4. If any play, support the wheel axle to prevent the trailer from falling
down from the jack.
5. Remove hub cap (A) and cotter pin (B). Turn the wheel and tighten
the castle nut (C), until a slight resistance is felt in the wheel
rotation.
6. Loosen the castellated nut until the first notch - horizontal or
vertical - is aligned with the cotter pin hole in the shaft.
7. Fit a new cotter pin and bend it to keep it in place.
8. Fit the hub cap to the hub again.
9. Repeat the procedure for the left wheel.
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