Great Plains 3PYPA Operator Manual - Manual (Page 116)

112 3PYPA Table of Contents Index Great Plains Manufacturing, Inc.
401-647M Table of Contents Index 03/20/2012
Hydraulic Maintenance
Hydraulic Drive Maintenance (Option)
As with any hydraulic system, contamination is the most
common cause of performance problems and pre-
mature wear. Make a special effort to properly clean
quick couplers prior to attaching the hoses to tractor, and
never let them fall to the ground.
High Pressure Fluid Hazard:
Relieve pressure before disconnecting hydraulic lines.Wear
protective gloves and safety glasses or goggles when working
with hydraulic systems. Use a piece of paper or cardboard,
NOT BODY PARTS, to check for suspected leaks. Escaping
fluid under pressure can penetrate the skin, causing serious
injury. If an accident occurs, seek immediate medical assis-
tance from a physician familiar with this type of injury.
If your 3PYPA planter has the optional hydraulic drive, it
is also equipped with a high-pressure filter
to protect
the system. With attention to clean connections, the con-
sumable element in this filter rarely needs replacing.
The filter has a pop-out indicator to alert you that the
filter must be replaced before next use. The element can-
not be cleaned and re-used; it must be replaced.
If you keep a spare filter on hand, replace the element
when the indicator pops. If you don’t keep a spare, plan
on seasonal element replacement.
Replacing Hydraulic Filter
Have cleaning rag, plus a pail ready to catch excess
hydraulic fluid. Even with the system depressurized back
to the tractor, there will be some spillage.
Refer to Figure 134
1.
Set tractor hydraulic controls for the drive circuit to
“float” and shutdown tractor. Allow oil to cool.
2. Set the pail under the filter.
3. Unscrew lower canister housing and empty it into
the pail.
4. Remove the filter element and safely discard it.
5. Install new filter element. See Parts Manual for
replacement part number.
6. Clean canister threads, and re-lubricate O-ring with
clean hydraulic fluid.
7. Re-install canister housing .
8. Re-set pop-out indicator (as necessary).
9. Activate tractor hydraulic circuit and check for leaks
with paper or cardboard.
Null4:
Figure 134
Hydraulic Drive Filter
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