Great-plains NTA1300 Predelivery Manual User Manual download pdf (Page 28)

NTA 1000 and NTA 1300 148-528Q 7/29/2004

Great Plains Mfg., Inc.

Bleeding Marker Hydraulics

To fold properly, the marker hydraulics must be free of air.

If the markers fold in jerky, uneven motions, follow these

steps.

CAUTION!

You may be injured if hit by a folding or unfolding marker.

Markers may fall quickly and unexpectedly if the hydraulics fail.

Never allow anyone near the drill when folding or unfolding the

markers.

Check that tractor hydraulic reservoir is full. Marker hy-

draulic capacity is 1.2 liters (.32 gallons).

1. With both markers lowered into ﬁeld position, loosen

hydraulic-hose ﬁttings at rod and base ends of marker

cylinders. If applicable, loosen ﬁttings on back side of

sequence valve.

IMPORTANT: Never bleed an O-ring fitting. Instead,

bleed a nearby pipe or JIC fitting.

2. With tractor idling, activate tractor hydraulic valve until

oil seeps out around a loosened ﬁtting. Tighten that ﬁt-

ting.

IMPORTANT: JIC fittings do not require high torque. JIC

and O-ring fittings do not require sealant. Always use liq-

uid pipe sealant when adding or replacing pipe-thread fit-

tings. To avoid cracking hydraulic fittings from over

tightening, do not use plastic sealant tape.

3. Reactivate tractor hydraulic valve until oil seeps out

around another loosened ﬁtting. Tighten that ﬁtting.

Repeat process until all loosened ﬁttings have been

bled and tightened.

Set-Up

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 36 37

No comments

Great-plains NTA1300 Predelivery Manual User Manual Page 28