1, test tire surface visual degree of wear and tear.
Tyre tread mill 'flat spot' may suggest that the accumulation of foreign body, such as thread the wire clutter may be winding wheel, remove the wheel bolts and nuts, clear clutter.
Check whether the wheel bearing damaged, if there is no damage to the parts can be reassembled continue to use, if often meet the wheels is sundry winding phenomenon advice can assemble anti-wind cover to avoid loose 2, universal wheel caster or wheel stuck also can cause 'smooth', the appropriate maintenance inspection, especially check bolt tightness, lubricating oil, to replace the damaged rolling performance and rotary motion of the caster wheel can enhance flexibility 3 serious breakage, rubber tires or lax rolling are likely to lead to instability, gas leakage, load is unusual, and floor damage and so on, timely replacement of damaged tires and bearing can reduce the cost brought by the loss caused by the damage of castor shutdown after 4, check repair wheels, determine whether the bolt and nut tightening, as far as possible at all to use the locking bolt washer or locknut.
If is loose, tighten the immediately.
If the inside of the bracket with the loose wheel will be to the rotation of the wheels was damaged or not Shanghai castor plant, universal wheel, casters, universal casters