Great Plains FH6800HD Operator Manual - Manual (Page 22)

18 FH6000HD Great Plains Manufacturing, Inc.
564-070M 04/28/2014
Fold
Negative Tongue Weight Hazard:
Allow no one near or especially behind the folding implement.
During fold the tongue weight shifts from positive to tempo-
rarily negative. If the hitch fails or there is a hydraulic failure,
the harrow can tip over backwards or the harrows can fall sud-
denly. Anyone under them could be seriously injured or killed.
Refer to Figure 11
1.
With tractor engine at low rpms, slowly retract the
fold circuit.
Equipment Damage Risk:
Do not move the harrow until folding is complete. Movement
when partially folded can damage wings or center frame.
Refer to Figure 12
2.
As the wings begin to fold forward, check that the
spring-operated cable lift arms
are lifting the
cables .
Note: Harrows smaller than 30 feet do not use cables.
Equipment Damage Risk:
Stop the fold if the arms are not lifting the cables. If the arms
are not lifting the cables, the arms and wings may collide. The
wings may also not seat correctly for transport.
3. Continue retracting cylinders until the wings are fully
against the stops on the transport cross-tube. Hook
transport chains
over pins on wings.
4. Harrow is now ready for transport (page 19), parking
(page 21) or storage (page 21).
Figure 11
Sections Folding Up
31670 1
2
Figure 12
Wings Folding In
31671
3
1 2
3