Hagie 204, Operator'S Manual

Page: 52 / 141

V. OPERATING INFORMATION
Power Steering
The full-time power steering system consists
of a hydraulic steering motor (mounted on the
end of the steering wheel shaft) which is
connected to a pair of double-action steering
cylinders (fig. 5.15, item 1) mounted on a
steering pivot (fig. 5.15, item 2) which oscillates
a pair of tie rods (item 5.15, item 3) going to
each steering leg. This system is powered by
one of the hydraulic dual gear pumps driven by
the sprayer’s engine. Since these gear pumps
are sensitive to engine RPM (the higher the RPM
the higher the oil flow), it is best to always
operate the detasseler at full recommended
RPM to ensure maximum steering
responsiveness.
Electro-Hydraulic Valve
The electro-hydraulic valve which control the
height of the detasseler head lift cylinders is
equipped with adjustable raise and lower orifices
controlled by independent coils (fig 5.16, item 1).
Upon initial setup adjust the orifice screws (fig.
5.16, item 2) as follows, then see page XX for
more precise adjustment:
RAISE – Adjust bolt all the way in and then
back it out 2½ turns.
HYDRAULIC SYSTEM CONTINUED
x
NOTE:
Over adjustment of raise orifice can
cause excessive working pressure.
FIG 5.15
1
3
2
FIG 5.16
1
2