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Maintenance and lubrication, Maintenance, Bleeding hydraulic systems – Great Plains V-300F Operator Manual User Manual

Page 101: Maintenance and lubrication maintenance, Warning

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11/15/2007

148-057M-A

Great Plains Manufacturing, Inc.

Maintenance and Lubrication

97

Maintenance and Lubrication

Maintenance

Proper servicing and adjustment are key to long life of
any farm implement. With careful and systematic inspec-
tion, you can avoid costly maintenance, time and repair.

Always turn off and remove tractor key before making
any adjustments or performing any maintenance.

!

WARNING

You may be severely injured or killed by being crushed by the
falling implement. Always have transport locks in place and
frame sufficiently blocked up when working on implement.

!

WARNING

Escaping fluid under pressure can have sufficient pressure 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 paper 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.

Only trained personnel should work on system hydraulics!

1.

After using implement for several hours, check all
bolts to be sure they are tight.

2.

Inflate tires as specified under Tire Inflation Chart
on page 114.

3.

Replace any worn, damaged or illegible safety
decals. Obtain new decals from your Great Plains
dealer. See “Safety Decals and Reflectors” on
page 6 f
or decal placement.

4.

Check drill drive chains for wear. Replace if neces-
sary. Adjust idlers to remove excess slack from chains.

Bleeding Hydraulic Systems

For safe and smooth operation, the hydraulic systems
must be free of air. The hydraulic systems should be bled
during initial implement set-up. If not, or if you repair
replace a hydraulic component, bleed the hydraulics.

IMPORTANT !

Bleed only at:

JIC (Joint Industry Conference, 37

°

flare) or

NPT (National Pipe Thread, tapered thread) fittings.

Never bleed at:

ORB (O-Ring Boss) or
QD (Quick Disconnect) fittings.

OFF

IMPORTANT !

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 (NPT) pipe-thread
fittings. To avoid cracking hydraulic fittings from over
tightening, and to keep tape fragments from clogging
filters, do not use plastic sealant tape.