Great-plains 3S-3000F Operator Manual v2 User Manual download pdf (Page 21)

Section 1 Drill Preparation and Setup

11/9/07

3S-3000 Three-Section Folding Drill 195-110M-A

Great Plains Mfg., Inc.

Bleeding the Hydraulic Systems

CAUTION!

This drill has a negative tongue weight when unfolded and the

openers raised. Be certain that the drill is hitched securely to

your tractor drawbar and be certain the safety chain is securely

attached to the tractor before raising the openers and unfolding

the drill.

Bleeding the Fold Hydraulics

Refer to Figure 1-14:

1. With the drill unfolded (the fold cylinders completely

extended), disconnect the rod end pins and swing the

NOTE: Check hydraulic ﬂuid level in tractor reservoir

and ﬁll it to proper level before starting this proce-

dure. Add ﬂuid to system as needed. A low reservoir

level may draw air back into the system causing jerky

or uneven cylinder movements. System capacity for

entire drill is approximately 4 1/2 gallons.

cylinders so they will not catch or contact anything

during the bleeding process.

2. Loosen the rod end hose ﬁtting at the elbow on the left

fold cylinder.

3. Slowly supply oil to the rod end of the fold cylinders

until oil appears at the loosened hose ﬁtting. Tighten

the rod end hose ﬁtting and completely retract the fold

cylinders.

4. With the cylinders completely retracted, loosen the

base end hose ﬁtting at the elbow on the left fold cyl-

inder.

5. Slowly supply oil to the base end of the fold cylinders

until oil appears at the loosened hose ﬁtting. Tighten

the base end hose ﬁtting and cycle the fold cylinders in

and out several times.

6. Repin the cylinder rod clevis.

Bleeding the Fold Hydraulics

Figure 1-14

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Great-plains 3S-3000F Operator Manual v2 User Manual Page 21