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ASSEMBLY
INTERSTATER 02/11 Assembly Section 3-12
© 2011 Alamo Group Inc.
ASSEMBLY
HYDRAULICS
Refer the Tractor Manual when connecting hydraulic hoses to the tractor hydraulic system.
Not only does the installation procedure vary from tractor to tractor, but numerous
precautions should be taken due to the possibility of a pressure buildup within the hydraulic
circuit. Relieve the pressure before opening or entering the circuit. FLUID ESCAPING
UNDER PRESSURE CAN PENETRATE THE SKIN CAUSING SERIOUS INJURY. Ensure
that hose fittings are secure before pressurizing the hydraulic systems.
Once pumps and belts are installed, DO NOT start the tractor (which will turn pumps) unless
both power circuits are filled with the specified hydraulic fluid. Running pumps without oil will
cause non-warrantable damage.
It is important that pipe thread sealant be used only on solid connections of pipe thread;
never on connections between swivel fittings and solid male pipe threads or on straight thread "O" ring fittings.
Use the pipe thread sealant supplied. Do not substitute with some other type of sealant, i.e., teflon tape, paint,
shellac, etc.
Hoses supplied have two types of fittings; solid or swivel. Some hoses have solid fittings on both ends; others
have a solid fitting and a swivel fitting. Hoses with two solid fittings will fit into either a female solid thread, or a
swivel adapter union. When installing either type hose, solid fittings must be installed first, then install the
swivel end of the hose.
The INTERSTATER hydraulic system incorporates three basic types of hydraulic fittings:
a. Standard pipe (NPT or NPTF) thread fittings. This type requires a small amount of evenly-applied sealant.
b. Swivel fittings. This type does not require any sealant on the swivel end because it seals against an internal
flare.
c. “O” Ring fittings. This type does not require any sealant on the “O” Ring end of the fitting.
It is extremely important to avoid getting pipe thread sealant inside the fittings or hoses. KEEP THE INTERIOR
OF ALL HYDRAULIC COMPONENTS SURGICALLY CLEAN. Inspect the inside diameter of each hose before
assembly. Ensure that no obstruction is present. Dirt, sand, dust, etc., are abrasive and once in the system can
cause immediate or early failure.
POWER CIRCUIT
Using the following drawing and your installation drawing as a guide to install the hydraulic hoses and fittings
for the power circuit. The power circuit drives the Interstater wing cutter units. The control circuit (for lift and tilt)
will be assembled later.
NOTE: Do not strap hoses together until all hoses and wiring are connected. Hoses and wiring should be
routed so they do not lay on moving parts, too close to sharp edges, or near excessive heat.