Great Plains NTA2000D Operator Manual - Manual (Page 17)

15 9/13/2006 NTA 2000D 148-632M
Great Plains Mfg., Inc.
Bleeding Hydraulic Systems
!
WARNING!
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin. Check all hydraulic lines and fittings before
applying pressure. Fluid escaping from a very small hole can be
almost invisible. Use paper or cardboard, not body parts, and
wear heavy gloves to check for suspected leaks. If injured, seek
medical assistance from a doctor that is familiar with this type
of injury. Foreign fluids in the tissue must be surgically removed
within a few hours or gangrene will result.
Note: For safe and smooth operation, the hydraulic sys-
tems must be free of air. The hydraulic systems should be
bled during initial implement set-up. If they were not bled,
or if you replace a hydraulic component during the life of
the drill, bleed the hydraulics.
Bleeding Lift Hydraulics
1.
Check hydraulic fluid level in tractor reservoir and fill to
proper level. Add fluid to system as needed while cy-
cling new cylinders. LIft hydraulic capacity is 2 gallons
(7.5 liters).
2. Lower drill to ground.
3. Loosen the fittings at the base end of each transport
lift cylinder. Supply oil to the base ends of the cylin-
ders until oil seeps from loosened fittings. Tighten
those fittings.
4. Supply oil to the base ends and completely extend the
cylinders. Insert transport lock channels.
5. Loosen the fittings at the rod end of each transport lift
cylinder. Supply oil to the rod ends of the cylinders un-
til oil seeps from loosened fittings. Tighten those fit-
tings.
6. Remove transport lock channels and cycle drill up and
down three times.
Bleeding Tongue Cylinder
1.
Check hydraulic fluid in tractor reservoir and fill to
proper level. Add fluid to system as needed. Tongue
cylinder capacity is 1/2 gallon (1.9 litres).
2. Raise and safely support hitch, transport frame and
front tongue.
3. Unpin rod end of tongue cylinder. Block, wire or other-
wise safely support cylinder so when rod end is fully
extended it does not contact anything.
4. Cycle cylinder completely in and out at least three
times to purge air from cylinder and hoses.
5. Fully extend cylinder and repin rod end.
6. Recheck tractor reservoir and fill to proper level.
!
CAUTION!
You may be injured or killed by a folding or unfolding opener or
coulter frame.
Bleeding Fold Hydraulics
Check hydraulic fluid level in tractor reservoir and fill to
proper level. Add fluid to system as needed while cycling
new cylinders. Fold hydraulic capacity is 2 gallons (7.5
liters).
If drill is folded:
1. Make sure the opener fold lock pins are in place. Loos-
en the fittings at the rod end of each coulter fold cylin-
der and at the base end of each opener fold cylinder.
Supply oil as to unfold the drill. As oil begins to seep
from the loosened fittings, tighten those fittings. Do
not unfold the wing sections at this time.
2. Make sure the opener fold lock pins are in place. Loos-
en the fittings at the base end of each coulter fold cyl-
inder and at the rod end of each opener fold cylinder.
Supply oil as to fold the drill. As oil begins to seep from
the loosened fittings, tighten those fittings. Continue
supplying oil as to completely fold the drill for at least
five seconds.
3. Remove the fold lock pins and unfold the drill.
!
CAUTION!
Use extreme caution because some sudden dropping of the
wings may occur if a small amount of air still remained in the
cylinders.
4. Fold and unfold the drill three more times.