• When handling trilateral and rear dumping attachments, arrange the spherically seated bearings at the rear end, close to the rear axle.
  
  
• Provide guide angles for the relevant spherically seated bearings, so that the dumping bridge is guided during the dumping.
  
  
• The maximum inclination angles and dumping bridge lengths can be taken from the axle load calculation, considering the maximum external attachment lengths.
  
  
• The pressing support is to be attached on cross members in the subframe.
  
  
• It is recommended to arrange the subframe cross-members over the cross members of the chassis frame.
  
  
• At trilateral dumping attachments, the point of application force of the dumping press is to be set in front of the centre of mass of attachment and net weight.
  
  
• Protection If required, the dumping bridge has to be secured against dropping. Take measures against unintentional operation. As a visual warning (dumping bridge not in driving position), a control lamp is to be connected in the cab.
  
  
• Subframe
  The subframe must be must be continuously designed and be provided with sufficiently dimensioned cross members made of steel. Close the rear area adjacent the box and brace it with diagonal cross. Connect the subframe with the chassis frame corresponding to the load, according to item 3.3.3.
  
  
• To fix the subframe laterally, weld guide plates in the area of the cross members at the subframe.
  
  

Moments of resistance of the subframe: