5-3 OPTIONAL HYDRAULIC VALVE
PLUMBING INSTRUCTIONS
D. Remove open center plug.
E. Install the closed center plug furnished with
valve. Note: When converting to closed center con-
figuration open center plug is removed from valve
and installed in sleeve of closed center plug assem-
bly.
F. Install valve operational decal on valve shield.
A. Mount valve assembly to valve plate using fas-
ten ers provided.
B. Plumb valve as shown in Figure 5-5.
C. This valve is set for an open center tractor
hydraulic system. If tractor has a closed center
hydraulic system, a closed center plug must be
installed.
Red - Rod End of Lift Cylinder
Yellow - Rod End of Bucket
HOSE COLOR CODES
Blue - Head End of Lift Cylinder
Green - Head End of Bucket
7/8” ORB to 3/4” JIC
Note: Single handle control shown.
Dual handle control plumbs the same
as shown.
To Presure Outlet
To Return Inlet
90° Elbow 1/2” NPT to 3/4” JIC
Attach Quick Couplers to these fittings.
(Quick couplers not supplied in kit.)
24
NOTES:
1. When attaching a loader valve to the
rear remotes of the tractor, a power beyond
kit is not required. (Figure 5-6) A power
beyond kit MUST be used when attaching a
loader valve to a hydraulic source other
than to the rear remotes of a tractor having
an OPEN center hydraulic system.
2. A power beyond kit is NOT required on
tractors with a CLOSED center hydraulic
system. The loader valve may be attached
to the tractor at the rear remotes or, at
another hydraulic source recommended by
the tractor manufacturer.
3. If Power Beyond System is used, refer to
basic Power Beyond plumbing instructions
on the following page. (Figure 5-7)
4. If the tractor has a Pressure Flow
Compensated System (PFC) - the loader
valve MUST be connected to the TRACTOR
REMOTES.
Figure 5-6 Walvoil Hydraulic Control Valve
NOTE:
When converting to closed
center configuration open
center plug is removed
from valve and installed in
sleeve of closed center
plug assembly.
Open Center Plug
Closed Center/Power Beyond Plug
