Work vehicle with hydraulic assist for power off steering

A steering system for a work vehicle includes a steering hand pump, a hydraulic main supply line fluidly coupled with the steering hand pump and including a check valve, and a normally open, two position valve. The valve includes an inlet fluidly couplable with a pressurized access point of a hydrau...

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Hauptverfasser: Vandendriessche Rik, Leplae Wim, Osselaere Guy H. J, Smith Brent E, Verheye Carlos J. A, Anderson Bruce E, Trowbridge Jeffrey C, Clifford Jimmie D
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Sprache:eng
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creator Vandendriessche Rik
Leplae Wim
Osselaere Guy H. J
Smith Brent E
Verheye Carlos J. A
Anderson Bruce E
Trowbridge Jeffrey C
Clifford Jimmie D
description A steering system for a work vehicle includes a steering hand pump, a hydraulic main supply line fluidly coupled with the steering hand pump and including a check valve, and a normally open, two position valve. The valve includes an inlet fluidly couplable with a pressurized access point of a hydraulic sub-system, an outlet fluidly coupled with the main supply line on a downstream side of the check valve, and a pilot port fluidly coupled with the main supply line on an upstream side of the check valve. The valve is operable in the closed position based on pressure in the main supply line when the main supply line is pressurized from a pressure source, and operable in the open position and interconnecting the pressurized access point with the main supply line through the outlet when the main supply line is not pressurized from the pressure source.
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subjects AGRICULTURE
ANIMAL HUSBANDRY
FISHING
FORESTRY
HARVESTING
HUMAN NECESSITIES
HUNTING
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
MOTOR VEHICLES
MOWING
PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES ORIMPLEMENTS, IN GENERAL
PERFORMING OPERATIONS
SOIL WORKING IN AGRICULTURE OR FORESTRY
TRAILERS
TRANSPORTING
TRAPPING
title Work vehicle with hydraulic assist for power off steering
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