3.15.4 Use of Multiway Valve Hydraulic Output Device
The tractor may not be equipped with one or two slide valve type hydraulic output multi-way valves as
required. The two valve plates are operated by two operating handles C and D respectively to control two
dual-acting cylinders on the machine tool. An oil inlet and an oil return port of the multi-way valve are
respectively connected with a gear pump and a lifter, and an oil outlet is connected with an oil inlet of
distributor. Each control valve has two NPT1/2 quick-change female connectors 1+, 1- (red) and 2+, 2- (blue)
(as shown in the figure), which are sealed with a sealing cover when not in use. When in use, connect the spare
male connector (placed in the spare parts box) with the oil inlet and outlet of the oil cylinder of the hydraulic
farm implement, and then connect it with the quick-change female connector. Handle "C" controls the first
hydraulic output 1+ and 1-(red), and handle "D" controls the second hydraulic output 2+ and 2-(blue). If a
single-action cylinder is connected, the oil pipe of the cylinder shall be connected to the first output 1+ (red) or
the second output 2+ (blue). Operate the control handles "C" and "D" upwards and downwards, the
single-acting or dual-acting oil cylinder will complete the corresponding actions. Both hydraulic output valves
can achieve single-action hydraulic output or double-action hydraulic output by screwing in or unscrewing the
single and double action conversion screw "E" on the multiway valve (as shown in the figure). Loosen and take
off the screw "E" counterclockwise to achieve a single-action hydraulic output. Conversely, screw "E"
completely in to achieve a double action hydraulic output. When using the hydraulic quick-change connectors
for connection, the following work shall be completed before inserting the male connector on the farm
implement into the female connector:
● Shut down the engine;
● Lower the suspended farm implements;
● Move the control handle of the hydraulic output valve back and forth to eliminate the pressure in the
hydraulic quick-change female connector;
● Remove the sealing cover of the quick-change female connector and clean the quick-change connector.
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