12 Faults and remedies 12.9 Grain delivery 67088 256 00 0293 210 2 - BA DOMINATOR 150/140/130 - 12/09 Malfunction Cause, remedy • Grain losses caused by insufficient threshing • Adjust the cutterbar so that even feeding of the threshing parts is achieved. • Adjust threshing drum speed to suit crop conditions. • Set the concave clearance to suit the crop. • Add disawner plates if required. • Provide for even crop feed to the threshing parts. • Correct basic adjustment of concave. • Have damaged or worn threshing drum repaired • Grain losses over the straw walkers • Adjust tension of the belt driving the intensive sepa- ration system. • Adjust tension of the belt driving the straw walkers.
• Ensure even feeding of threshing parts (front attachment). • Clean concave and space behind it. • Avoid excessive returns by correct adjustment of cleaning unit. • Clean dirty straw walkers and under-walker return floor. • Reduce drum speed and reduce concave-to-drum clearance. • Reduce ground travel speed. • Provide correct position of deflector curtain above straw walkers. • Have deflector curtain above the straw walkers replaced. • Grain losses over the cleaning stage • Avoid excessive matting. • Adapt air blast to meet crop conditions. • Adjust wind boards to correct position. • Decrease drum speed when short straw overloads the sieve pan.
• Check fan variable-speed pulleys for smooth operation. • Standard cleaning system: Adjust returns passthrough area of upper frogmouth sieve wider open. • Adjust frogmouth sieve gaps wider open and increase air blast. • Avoid excessive returns. • Clean upper sieve, lower sieve and preparation floor. • Reduce ground travel speed.