Great Plains 1205NT Operator Manual - Manual (Page 40)

1205NT
150-131M 3/28/12
38
Marker Adjustments
Bleeding Marker Hydraulics
The markers must be properly bled to displace air
in the hydraulic system and for the sequence
valve to work properly. Failure to do so could
cause marker to drop quickly and cause damage
to marker voiding the warranty.
Overhead and Crushing Hazard:
Keep others away when folding or unfolding markers.
Markers may fall quickly and unexpectedly if hydrau-
lics fail.
High Pressure Fluid Hazard:
Escaping fluid under pressure can have sufficient pres-
sure 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 pa-
per 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.
Check that tractor hydraulic reservoir is full before
bleeding the hydraulics. A low reservoir level may
draw air back into the system, causing jerky or un-
even cylinder movements.
JIC fittings do not require high torque. JIC and O-Ring
fittings do not require sealant. Always use liquid pipe
sealant when adding or replacing pipe thread fittings.
To avoid possible danger of cracking hydraulic fittings
from overtightening, do not use plastic sealant tape.