Great Plains DVN8324 Operator Manual - Manual (Page 24)

20 8315-8324DVN Great Plains Manufacturing, Inc.
550-466M 11/25/2013
Hydraulic Hose Hookup
Great Plains hydraulic hoses are color coded to help you
hookup hoses to your tractor outlets. Hoses that go to the
same remote valve are marked with the same color.
High Pressure Fluid Hazard:
Shut down tractor before making hydraulic connections.
Only trained personnel should work on system hydraulics!
Escaping fluid under pressure can have sufficient pressure to
penetrate the skin causing serious injury. Avoid the hazard by
relieving pressure before disconnecting hydraulic lines. Use a
piece of paper or cardboard, NOT BODY PARTS, to check for
leaks. Wear protective gloves and safety glasses or goggles
when working with hydraulic systems. If an accident occurs,
seek immediate medical assistance from a physician familiar
with this type of injury.
Refer to Figure 7
To distinguish hoses on the same hydraulic circuit, refer to
handle symbols.
• The hose with an extended-cylinder symbol feeds a cyl-
inder base end.
• The hose with a retracted-cylinder symbol feeds a cyl-
inder rod end.
Secure hoses and cables so that they have sufficient
slack for hitch movements, but cannot get caught between
moving parts of tractor, implement or hitch. Failure to
safely route and secure hoses and cables could result in
damage requiring component repair/replacement, and
lost field time.
Clean all hydraulic couplings and hook hoses to tractor.
Brake Hook-up (Option)
Two 8315-8324DVN braking (trailer braking) systems are
available:
• Dual-line air system (Figure 8) with wheel chocks
(Figure 10) for parking and
• Single-line hydraulic (Figure 9) with wheel chocks
(Figure 10).
In both systems, the tractor’s trailer brake remote port(s)
operate a hydraulic slave cylinder on the Discovator.
Tractor trailer braking systems are normally integrated
with the tractor brakes, and operate the trailer brakes
when tractor brakes are used during tractor movement.
The trailer braking system may or may not be integrated
with the tractor parking brake system.
Figure 7
Hose Handles
31733
Color Hydraulic Function
Black Lift (2 hoses)
Green Fold (2 hoses)
Red Gang (2 hoses)
“BRAKES” Hydraulic trailer brakes (Option)
Figure 8
Air Brake System
41928