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Optional Auxiliary By-Pass Control Valve (PN: 9PKFELBV)
• Installation of this Curtis Auxiliary Control Valve retains the Tractor/Loader's Bucket Cylinders for down pressure
• The Curtis Auxiliary Control Valve is Universal in nature.
• Carefully consider mounting location before proceeding.
• Due to Tractor variations, Curtis only supplies Hoses and Fittings between the Angle Cylinders and Curtis By-
Pass Relief Valve. All additional Hoses, Fittings and Couplings are Dealer/Customer supplied.
1.) Determine convenient location to mount Auxiliary Control Valve.
If Loader is Quick Attach Style, consider mounting Valve to remain with Tractor/Loader when detached.
2.) Disconnect Pressure Supply Line from existing Tractor/Loader Valve.
3.) Route Tractor/Loader Pressure Supply Line to Inlet Port marked "IN" on Auxiliary Control Valve.
4.) Route a Dealer supplied Line from Outlet Port marked "OUT" on Auxiliary Control Valve to Pressure Port on
existing Tractor/Loader Valve.
5.) Route two additional Dealer Supplied Hoses from Ports marked "A" and "B" on existing Tractor/Loader Valve
down along Tractor/Loader Arms to corresponding "A" and "B" ports on Curtis By-Pass Relief Valve.
NOTE
6.) Route Curtis Supplied Angle Hoses from "C" and "D" Ports on Curtis By-Pass Relief Valve to Left and Right
Angle Cylinders.
7.) Check all Hydraulic connections and test operation. Inspect for leaks.
IMPORTANT
Figure 16 . Hydraulic Routing Diagram
Left
Angle
Cylinder
Curtis Auxiliary By-Pass Control Valve Port designations are for reference only.
Seal all N.P.T. (National Pipe Thread) connections with a Paste Type Thread Sealer
(e.g. 3M, Great White) DO NOT use Teflon Tape. Teflon Tape may contaminate Hydraulic
System and cause a malfunction.
SUPPLIED HOSE
Auxillary Loader Control Valve
Attach Control
Lever Here
To "A" Port on
By-Pass Relief Valve
To "B" Port on
By-Pass Relief Valve
IMPORTANT
Curtis By-Pass Relief Valve
To Control Valve
Left Angle Function
A
D
C
B
To Control Valve
Right Angle Function
Tractor Hydraulics
Pressure Hose
IN
A
B
OUT
To Tractor
Loader Valve "IN"
SUPPLIED HOSE
Right
Angle
Cylinder
13 of 14
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