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The Friends of Ferguson Heritage Ltd. -Hydraulic Lift |
This page illustrates how movement of the hand control lever raises or lowers the lift arms.
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...and don't bother to tell me, I know that the grey
paint is the wrong shade, some of the bearings are shot, and the
spring looks as if it might drop off soon...
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Notice that when the control
lever pushes the top of the control fork to the right (forward),
the control fork pivots about point "a", so that the
control valve is pulled to the left (rearward). The valve is
drawn in much simplified form, and shows how oil is pumped 
into the ram
cylinder, or released 
from the ram, or neither (neutral
position).