Buhler 2290, 2335, 2425, 2375, 2360 manual Hydraulic Motor Applications, 134

SECTION 2 - OPERATION

HYDRAULIC MOTOR APPLICATIONS

The hydraulic system is a load sensing, pressure and flow compensating system. Pressure and flow are regulated by a load sensing line from the implement valve. For proper and efficient use of the system, low volume open center hydraulic motors or closed center system motors with restricting orifices removed and bypass valve closed should be used. Motor speed must be regulated with tractor implement valve flow control rather than bypass valves and orifices at the motor. This will reduce heat buildup, save oil for other simultaneous operations of the implement valve, and increase system reliability.

1.Use hydraulic motors designed for open center or pressure/flow load compensating hydraulic systems only. Do not use a hydraulic motor designed for closed center hydraulic systems unless it is adapted for use by removing the inlet restricter.

2.Be sure the hydraulic motor does not have restricters in the ports or fittings.

3.Hydraulic motors rated at less than 37.85 L/min (10 US GPM) may be equipped with 12mm (1/2″) ID hoses and standard (ASAE/SAE/ISO) couplers.

4.Hydraulic motors rated at greater than 10 US GPM (37.85 L/min) should be connected with 19mm (3/4″) hoses and (ASAE/SAE/ISO) couplers to prevent excessive restriction and heat generation. Use the optional 19mm (3/4″) coupler kit P/N 86010513 available from your Buhler Versatile dealer. See “Optional Hydraulic Equipment” later in this section for more information on this kit.

OPERATING REMOTE EQUIPMENT SIMULTANEOUSLY OR REMOTE EQUIPMENT AND HYDRAULIC LIFT SIMULTANEOUSLY

NOTE: Hydraulic pump output varies with engine speed. Oil flow will be relatively constant in the remote control valve circuits if the flow control valve is used to provide reduced oil flow, thus providing constant operating speed for hydraulic motors, etc. even if engine speed varies. Maintain the engine speed above the minimum required for simultaneous operation of all required circuits and vary ground speed by selection of the appropriate gear ratio.

If operating two or more remote control valves simultaneously or remote valves and 3-point hitch, the flow control should be adjusted to provide a partial flow to each valve circuit. (The hydraulic system of the tractor is designed to provide adequate oil flow to the implement valve to satisfy system demand, regardless of the number of valve sections that are activated (i.e., running an air seeder fan motor and lifting the cultivator).)

By adjusting the flow control of each valve section, the system performance will be maximized and will show up as proper performance of the implement functions.

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