Great Plains 3P806NT Operator Manual - Manual (Page 19)

Great Plains Manufacturing, Inc. Table of Contents Index Preparation and Setup 15
2011-12-20 Table of Contents Index 151-143M
Hydraulic Hose Hookup
Hydraulic Hose Hookup (s/n A1057V+)
Applies to drills with serial numbers A1057V+
Connect hydraulic system to tractor before lifting the drill.
The hydraulic system of the 3P806NT drill has one
single-acting lift-assist cylinder. (This cylinder has a
larger capacity than the dual cylinders used in the
previous hydraulic system with models A1056V-.) The
cylinder raises the rear of the drill during lift (tractor
3-point lift arms raise the front).
Refer to Figure 3
5.
Determine which tractor remote to use for lift assist,
and set the lever for that circuit to Float (to relieve
any pressure).
6. Connect the single lift hose to the Extend port of the
tractor remote.
Note: Prior to first use, adapt the
1 ⁄
2
in. male NPT hose
fitting to a connector compatible with the tractor.
Use liquid pipe thread sealant (not tape) on NPT.
A poppet style QD (Quick Disconnect) to
1 ⁄
2
in. FNPT
coupler is available as part number 811-856C.
Bleeding Hydraulics
When the hydraulic system is first charged, and if air is
later allowed in the system, it is necessary to bleed it, or
lift may be uneven side to side. See “Bleeding
Hydraulics (s/n A1057V+)” starting on page 52.
Hydraulic Hose Hookup (s/n A1056V-)
Applies to drills with serial numbers A1056V-
Refer to Figure 4
The hydraulic system of the 3P806NT drill (models with
serial number A1056V-) has two single-acting lift-assist
cylinders. These cylinders raise the rear of the drill
during lift (tractor 3-point lift arms raise the front).
Electrical Connection
Refer to Figure 5
7.
Plug the drill lighting connector into tractor outlet.
8. Coil-up and tie-up excess cable, allowing enough
slack for the drill to tilt back if the tractor 3-point lift
arms happen to be raised prior to the lift-assist
circuit.
Figure 3
Drill Hydraulic System
(s/n A1057V+)
32056
High Pressure Fluid Hazard:
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 immediate medical attention from a physician familiar
with this type of injury.
1
1
Figure 4
Drill Hydraulic System
(s/n A1056V-)
28224
1
Figure 5
Lighting Connector
26467