Valtra 900 - F 7. Use of top link; G. Maintenance schedule

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F. Operating instructions
F 7. Use of top link
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NOTE! When using a top link turn the bracket towards
the tractor until it is fully touching the hydraulic top
link. Then there is no danger that the bracket fouls the
holder pin and damages the hydraulic top link.
1) If the hydraulic lift cannot raise the implement, this may
be due to incorrect position of the top link.
NOTE! The lifting force and lifting height are
dependant on which hole the top link is connected to
in the brackets on the tractor and on the implement.
Maximum lifting height (and minimum lifting force) =
top link in lower attaching hole on tractor and in upper
attaching hole on implement.
Maximum lifting force (and minimum lifting height) =
top link in upper attaching hole on tractor and in lower
attaching hole on implement.
When you are using a hydraulic top link, ensure that it
operates normally when you are attaching an implement.
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2) The hydraulic lift has a greater lifting force when the top
link is moved upwards on the tractor and downwards
on the implement.
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3) Top link set too long giving poor lifting height on rear
end of the implement.
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4) Lifting height large at rear end since top link has been
lowered on the tractor and raised on the implement.
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5) Draft control does not function since top link comes too
low on the tractor. The wheels spin.
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6) The plough/plow does not sink to the required depth
(the top link must be adjusted horizontally). If the top
link is shortened in order to further the plough’s/plow’s
depth into the ground, care must be taken to hold the
plough/plow straight.
When ploughing/plowing, it is important that the
plough’s/plows body is in the same direction with the
ground surface both lengthways and sideways. If you alter
ploughing/plowing depth, the top link length and the lift
link gear must be readjusted. As a basic rule, the top link’s
end situated towards the plough/plow is set clearly higher
than the end situated towards the tractor.
NOTE: See also manufacture’s instructions.