Bleeding fold hydraulics – Great Plains 3S-5000HDF Operator Manual User Manual
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3S-5000/F/HD/HDF
Great Plains Manufacturing, Inc.
195-325M
2012-08-14
Bleeding Fold Hydraulics
Refer to Figure 57
1.
Check hydraulic fluid level in tractor reservoir and fill
to proper level. Add fluid to system as needed.
2.
With drill unfolded and fold cylinders completely
extended, disconnect rod end pins and swing the
cylinders so they will not contact anything when
extended.
3.
Loosen rod end hose fittings
at elbow on lower
fold cylinders.
Note: Do not loosen an O-ring fitting for bleeding.
Bleeding air from an O-ring fitting will damage the
seal.
4.
Slowly supply oil to rod end of fold cylinders until oil
appears at loosened hose fitting. Tighten fitting and
completely retract fold cylinders.
5.
With cylinders completely retracted, loosen base end
hose fittings
at elbow on lower fold cylinders.
6.
Slowly supply oil to base end of fold cylinders until oil
appears at loosened hose fitting. Tighten base end
hose fitting and cycle fold cylinders in and out
several times.
7.
Re-pin cylinder rod clevis.
Figure 57
Bleeding Fold Hydraulics
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