Tractor Ops State 2024

Remote __________ _________ raise and lower implements of all types, provide weight transfer and provide quick and easy adjustment of large implements

• hydraulic cylinders

• swinging drawbars

• lateral drawbars

• quick-attaching couplers

Tractors may be equipped with up to __ sets of remote hydraulic coupling units.

• 4
• 3

• 2

• 1

On modern tractors, each hydraulic coupling unit consists of ___ ports.

• 4
• 3

• 2

• 1

In 1960 ____________________________ were introduced. This arrangement made possible the use of one hydraulic pump to provide power for the many different hydraulic functions necessary on modern tractors

• Closed-center central hydraulic system

• Hydrostatic Transmissions

• High-low Power Shift Transmissions

• Power Take Off arrangements

What does the abbreviation SCV stand for?

• Super Clear Vision

• Selective Control Valve

• Slow Controlled Vehicle

• Selective Cylinder Volume

What organization(s) recommends a standard hydraulic hose tip to fit modern hydraulic coupling units on tractors? (Mark all that are correct)

• International Standards Organization

• Society of Automotive Engineers

• American Petroleum Institute

• Dominion of Unified Manufacturing Brothers

In some cases, the second hose on a single-acting hydraulic cylinder is connected to the coupling unit to:

• to provide for the correct direction of hydraulic fluid flow

• to both extend and retract the cylinder

• serve as a breather line

• to control the cylinder in the proper direction

Which of the following is NOT true about connecting double-acting cylinders?

• Generally, you only have to connect one hose to the correct port as described in the tractor operator’s manual.

• The hydraulic cylinder will operate regardless of the way it which the hoses are connected, the control lever action will be reversed.

• On some systems, the hydraulic cylinder will not work properly if the hose connections are reversed.

• The easiest way to provide fast hookup is to mark both the tractor ports and the cylinder hoses.