Electrical trigger for quick drop valve

Details Electrical trigger for quick drop valve Electrical trigger for quick drop valve

1992-03-19

1993-10-12

Taylor, Dennis L.

Earth working

Mounting for pushed tool at end of motor vehicle

Transversely mounted blade

91439, 91436, 91461, E02F 385, F15B 1304

Patent

active

052517055

ABSTRACT:
A quick drop valve is electrically actuated by a switch located adjacent to the implement positioning control lever. The quick drop valve is a pilot operated spring biassed valve. When the electric switch is closed a solenoid valve is energized redirecting fluid between the pilot control lines. The quick drop valve is shifted short circuiting the flow of fluid from the lift side of the hydraulic cylinder to the reservoir and redirects it to the drop side of the hydraulic cylinder for quickly dropping the working implement.

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Caterpillar publication, Specifications for D6H Tractor Hydraulics, 10 pages.
Publication on a FD14E Crawler Tractor, Service Manual, 5 pages.
Parts Manual publication for Model TD-15E S/N 8001 and Up Crawler Tractor, Form 1128 201 H1, Jun. 1988.

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