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1205NT

Hydraulic Hose Hookup

Great Plains hydraulic hoses are color coded to

help you hookup hoses to your tractor outlets.

Hoses that go to the same remote valve are

marked with the same color.

Color

Blue

Orange

To distinguish hoses on the same hydraulic circuit,

refer to plastic hose holder. Hose under extended-

cylinder symbol feeds cylinder base ends. Hose

under retracted-cylinder symbol feeds cylinder

rod ends.

Bleeding Hydraulics

WARNING

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. Foreign ﬂuids in the tissue must be

surgically removed within a few hours or gangrene

will result.Check that tractor hydraulic reservoir is

full.

The drill lifting system is equipped with rephasing

type hydraulic cylinders that require a special pro-

cedure for bleeding air from the hydraulic circuits.

Read and follow this procedure carefully. Rephas-

ing type cylinders will not function properly with air

in hydraulic circuit.

1. Check hydraulic ﬂuid in tractor reservoir and

ﬁll reservoir to proper level. Drill-system ca-

pacity is about 1 gallon. Add ﬂuid to system as

needed. A low reservoir level may draw air

back into the system, causing jerky or uneven

cylinder movements.

150-131Q

Hydraulic Function

Transport Lift Cylinders

Marker Cylinders

Figure 9

Hydraulic Hose Label

17641

3/24/06