Great Plains NTA3010 Predelivery Manual - Manual (Page 26)

24 NTA3010, NTA3510 and ADC Great Plains Manufacturing, Inc.
160-220M 11/06/2008
Charging Fold Hydraulics
The fold/unfold functions are on a hydraulic circuit that is
shared with the hydraulic fan on the air cart. The fan
must be disabled during fold and unfold.
36. Check the hydraulic fluid level in the tractor reservoir
and fill to the proper level. A low reservoir level may
draw air back into the system and cause jerky or
uneven cylinder movement. During initial cycling of
new fold cylinders, you will need 6 gallons
(22.5 liters) of oil.
!
WARNING
Escaping fluid under pressure can have sufficient pressure to
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
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems. If an accident occurs,
seek immediate medical attention from a physician familiar
with this type of injury.
Refer to Figure 27
37. Remove shipping restraints from the fold cylinders at
the front of the center section.
38. Block, wire or otherwise safely support rod ends, so
that they cannot contact any objects when fully
extended.
IMPORTANT !
Failure to block cylinders before extending will cause
machine damage.
Refer to Figure 28
39. Shutoff the cart fan.
Refer to Figure 29
40. Turn the drill hydraulic selector valve to the Fold/
Unfold position.
41. Cycle the cylinders completely in and out at least
three times to remove all air from the fold system.
Inspect all hoses, cylinders and fittings for oil leaks.
42. Extend cylinders until cylinder clevis line up with cyl-
inder lugs. Pin cylinders to lugs.
43. Recheck the tractor hydraulic reservoir and fill to the
proper level.
Figure 27
Fold Cylinder Rod Supported
16432
Figure 28
Cart Fan Off for Fold/Unfold
26419
Figure 29
Drill Valve Set for Fold
26412