New Holland 499 Operator's Manual page 20

SECTION 1 - GENERAL INFORMATION
HYDRAULIC CYLINDERS
(Swing and Lift)
WARNING
Fluid under pressure can have sufficient force to
penetrate the skin, causing serious personal
injury. Always protect the skin and eyes from
escaping fluid under pressure.
Before disconnecting lines or fittings, be sure to
relieve all pressure. Before applying pressure to
the system, be sure all connections are tight and
that lines, pipes, and hoses are not damaged.
If injured by escaping fluid, obtain medical
assistance at once. Serious infection or reaction
can develop if medical treatment is not
administered immediately.
CONNECTING THE HYDRAULIC HOSES TO
2
THE TRACTOR
1
1/2" tapered pipe thread fittings are used on the three
hydraulic cylinder hoses. Install hose couplings that
will match the tractor couplings. Use a thread
sealant.
Connect the center and right (swing cylinder) hoses,
1, to the remote couplers from a two-way tractor
control valve.
IMPORTANT: If this valve is adjustable, set it for slow
10003625
hydraulic flow to the swing cylinder.
20
Attach the lift cylinder hose, 2, to a remote coupler
from the second control valve. Connect the hose so
the header will rise when the hydraulic valve lever is
moved to the lift position.
IMPORTANT: Tractor hydraulic relief valve pressure
must not exceed 207 bar (3000 PSI) or the machine
may be damaged. It will require a minimum of 120.65
bar (1750 PSI) to activate the lift cylinders.
NOTE: Air must be bled from the lift and swing
cylinders to fill the hydraulic system or whenever
repairs are made to the lines and couplings.
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