Great Plains 3S-4000F Predelivery Manual - Manual (Page 18)

3S-4000
195-242Q 9/12/2009
16
6. Slowly supply oil to top side of pressure-con-
trol valves until oil begins to appear at a loos-
ened hose fitting. As oil begins to appear at a
fitting, tighten that fitting.
7. Slowly supply oil to bottom side of pressure-
control valves until oil begins to appear at re-
maining loosened hose fitting. As oil begins to
appear at the fitting, tighten fitting. Continue
to supply oil to bottom side of pressure-con-
trol valves until all openers are raised com-
pletely.
8. Move opener transport locks to field position
and cycle openers up and down ten times.
Each time you lower openers, hold tractor re-
mote lever until opener circuit builds up to
pressure set at control valves.
9. After cycling openers, return opener transport
locks to road position.
Bleeding Opener Lift Hydraulics
1.
Check hydraulic fluid level in tractor reservoir
and fill to proper level. Add fluid to system as
needed. System capacity for entire drill is
about 4 1/2 gallons.
2. Make sure opener frames are locked up in
road position. Refer to Opener Lock Up in the
operator’s manual.
3. Turn knob on both pressure-control valves
completely counterclockwise, then turn
valves clockwise far enough to build up 1000
psi (about three turns).
4. Turn knob on bypass valve (1) completely
clockwise for no oil flow.
5. Loosen six hose-end fittings (2) at the loca-
tions shown.
NOTE: Do not loosen an O-ring fitting for bleed-
ing. Bleeding air from an O-ring fitting will damage
the seal.
20000