Great Plains Hydraulic Depth Stop User Manual

Before you start, General information, Instructions

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Update Instructions

Great Plains Mfg., Inc.

© Copyright 1996 Printed 10/19/07

Used with:


196-188M

2N-24 & 2N-30 Drills

Hydraulic Depth Stop Update

24’ and 30" Folding No-Till Drill

20 Series Folding Drill

Before You Start

These update instructions provide information on how to modify
the 2N-24 and 2N-30 drills. These modifications will improve the
performance, reliability and/or safety of the original equipment. A
detailed Operator’s Manual was supplied with the main unit when
it was purchased. Refer to the Operator’s Manual for information
on safety, operation, adjustment, troubleshooting, and mainte-
nance pertaining to this equipment (some of these sections do
not apply to all equipment).

A separate Parts Manual for replacement parts can be pur-
chased from your dealer. Have model and serial numbers handy
when placing an order.

Manual Part Numbers:

• Folding No-Till Operator’s Manual . . . . . . . . . . . . .196-126M

• Folding No-Till Parts Manual . . . . . . . . . . . . . . . . . 196-126P

• 20 Series Folding Drill Operator’s Manual . . . . . . .196-164M

• 20 Series Folding Drill Parts Manual . . . . . . . . . . . 196-164P

General Information

These update instructions apply to the 2N-24 and 2N-30 Depth
Stops listed below:

196-189A 2SNT DEPTH STOP UPDATE KIT

Starting on page 4 is a detailed listing of parts included in these
kits. Use this list as a checklist to inventory parts received.

Instructions

The existing hydraulic depth stop valve is being upgraded. With
the new valve the coulter depth is adjusted by means of a knob
on the valve assembly (remove bushings before operation).

!

CAUTION!

Escaping fluid under pressure can have sufficient force to penetrate the
skin. Check all hydraulic lines and hoses before applying pressure.
Fluid escaping from a very small hole can be almost invisible. Use pa-
per or cardboard, not body parts, to check for suspected leaks. If in-
jured, 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.

NOTE: 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 pipe thread fittings. To avoid pos-
sible danger of cracking hydraulic fittings from overtighten-
ing, do not use plastic sealant tape.

IMPORTANT: When using sealant on pipe threads the friction
between the threads is reduced; therefore, be certain not to over
tighten which may cause damage to a valve, cylinder port or fit-
ting.

Disassembly of Existing Depth Stop

Refer to Figure 1:
With the drill attached to the tractor, unfold and lower the drill into
field position and relieve the cylinder pressure on the field lift cyl-
inders . Remove the hard line (#1) and disconnect the hose (#2)
from the rod end of the left hand cylinder which the depth stop
valve is attached to. Unpin and remove the cylinder (#3). Re-
move and discard parts 4 through 10 from the cylinder.

When you see this symbol, the subsequent instructions
and warnings are serious - follow without exception. Your
life and the lives of others depend on it!

!

Disassembly

Figure 1

15662

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