Great Plains YP4425A Operator Manual - Manual (Page 26)

401-805M Table of Contents Index 2012-02-23
22 YP4425A Table of Contents Index Great Plains Manufacturing, Inc.
Operating Instructions
This section covers general operating procedures.
Experience, machine familiarity, and the following
information will lead to efficient operation and good
working habits. Always operate farm machinery with
safety in mind.
Pre-Start Checklist
Perform the following steps before transporting the
YP4425A planter to the field.
❑ Carefully read “Important Safety Information” on
page 1.
❑ Install seed discs appropriate for crop. See
“Air-Pro
®
Meter Disc Installation” on page 77.
❑ Lubricate planter as indicated under “Lubrication”
on page 111.
❑ Check all tires for proper inflation. See “Tire
Inflation Chart” on page 134.
❑ Check all bolts, pins, and fasteners. Torque as
shown in “Torque Values Chart” on page 135.
❑ Check planter for worn or damaged parts. Repair or
replace parts before going to the field.
❑ Check hydraulic hoses, fittings, and cylinders for
leaks. Repair or replace before going to the field.
Fold/Unfold Lock Overview
The YP4425A planter includes five sets of locks for the
frame, wings and casters:
1. Wing locks: Hooks on the tongue engage locks on
the wings to prevent unfolding in transport. Tongue
must be raised to engage/release. See page 24.
2. Lift cylinder lock channels: These are
operator-installed on a raised plater, these prevent
lowering in transport or when parked. See page 27.
3. Fold cylinder and Caster swing arm cylinder lock
valves: Switch-controlled solenoid valves prevent
motion of the fold cylinders and caster swing arm
cylinders, in transport and field. See page 136.
4. Tongue lock: This engages automatically at unfold,
and lock the tongue/draw bar geometry for field
operations. See page 24.
5. Caster pivot locks: operator-engaged after unfold,
these prevent caster swiveling in the field, which aids
in tracking across hillsides. See page 29.
High Pressure Fluid Hazard:
Relieve 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. Escaping fluid under
pressure can have sufficient pressure to penetrate the skin
causing serious injury. If an accident occurs, seek immediate
medical assistance from a physician familiar with this type of
injury.
Figure 14
Fold/Unfold/Lift Locking Features
34088
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