Great Plains V-300F Operator Manual - Manual (Page 40)

36 V300 & V300F Great Plains Manufacturing, Inc.
148-057M-A 11/15/2007
Hydraulic Down Pressure
The pivoting openers are mounted a floating opener
gang frame which follows the contour of the ground while
maintaining constant opener down pressure. The down-
pressure feature requires a tractor hydraulic circuit capa-
ble of continuous flow. The following instructions pre-
sume the drill hydraulic connections have been made per
the hook-up Notes on page 17, and calibrated per the
instructions on page 22.
1. Lower the opener frames by moving tractor remote
hydraulic lever for the Lift/Lower circuit into the
lever’s continuous flow configuration. The remote
lever must be LOCKED OPEN in this position to pro-
vide constant pressure/flow to the openers.
John Deere tractors with Sound-Gard ® Body:
Use lever lock clip, John Deere part number R52667,
to lock lever forward. See your tractor dealer for clip
purchase and installation.
John Deere 7000 Series tractors: Rotate valve
detent selector to motor position to lock lever in for-
ward position.
John Deere 8000 Series tractors: Set timer to con-
tinuous. Push lever forward until detent clicks.
Case-IH Magnum tractors: Lock lever forward in
detent position. You may need to turn up detent pres-
sure to its maximum setting. Do not tie hydraulic
lever past detent position with a strap. See your trac-
tor dealer for hydraulic-system details.
Other tractors: Lock lever forward in detent position.
You may need to turn up detent pressure to maxi-
mum or use a mechanical detent holder to hold lever
forward. See your tractor dealer for proper means of
providing constant flow to openers.