Great Plains 3S-4000F Predelivery Manual - Manual (Page 17)

9/12/2009 195-242Q
15 Setup
Bleeding Hydraulics
To function properly, the hydraulics must be free of
air. If hydraulics have not been bled, they will op-
erate with jerky, uneven motions and could cause
wings to drop rapidly during folding or unfolding.
Complete the following procedures during initial
drill setup.
!
WARNING
Raising openers on unfolded, unhitched drill will
cause drill tongue to rise suddenly, which could cause
serious injury or death. Be certain that drill is hitched
securely to your tractor drawbar and the safety chain
is securely attached to tractor before raising openers
and unfolding drill.
!
WARNING
Escaping fluid under pressure can penetrate the skin
causing serious injury. Avoid the hazard by relieving
pressure before disconnecting hydraulic lines. Use a
piece of paper or cardboard, NOT BODY PARTS, to
check for suspected leaks. Wear protective gloves and
safety glasses or goggles when working with hydraulic
systems. If an accident occurs, see a doctor immediate-
ly. Any fluid injected into the skin must be surgically
removed within a few hours or gangrene may result.