Setting Detents and Operating SCV Control Levers-Three-Function Deluxe Valve (If Equipped)

Setting Control Lever Detents

Each section of the deluxe SCV has selectable detents, used to change control lever operations to meet operating requirements of different implements. Detent settings only affect extend and retract lever positions, not "float".

NOTE: Read operator's manual symbol (A) is for reference only and is not a selectable setting.

The three settings are:

  • (B)-Continuous Detent (Motor)
  • (C)-No Detent (Loader)
  • (D)-Automatic Detent (Cylinder)

NOTE: Knob setting stop is in the front, center position (white triangles).

SCV Knob Position-Operation Control Lever Detent
Centered-Loader operation No Detent-Lever returns to neutral when released
Turn counterclockwise-Motor operation Continuous Detent-Holds lever in operating position until manually returned to neutral
Turn clockwise-Cylinder operation Automatic Detent-Lever automatically returns to neutral when cylinder reaches end of stroke

 


A-Read Operator's Manual
B-Continuous Detent (Motor)
C-No Detent (Loader)
D-Automatic Detent (Cylinder)

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IMPORTANT: To avoid overheating hydraulic oil and damage to tractor, use SCV I when long duration "continuous" (motor) operation is required. Section I of the deluxe SCV has a flow control valve which, when properly adjusted, provides flow to operate an implement at required speed. Only motors requiring high flow at low pressure can be used on open center hydraulic systems. Do not use with motors requiring low flow at high pressure, oil will overheat and cause damage to hydraulic system. See your nearest John Deere dealer for more information on hydraulic motor applications.

Valve sections II and III can be set to "continuous" (motor) detent, but should only be used for intermittent applications (not exceeding 10 min/hr maximum) or hydraulic oil will overheat and damage tractor.

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Operating Control Levers

Extend and Retract Cylinders: With hoses properly connected to couplers, pull lever back to extend remote cylinder or push forward to retract.

  • When selector knob is set to No Detent (Loader) position, lever returns to neutral when released.
  • When selector knob is set to Automatic Detent (Cylinder) position, lever automatically returns to neutral when cylinder reaches the end of stroke.
  • When selector knob is set to Continuous Detent (Motor) position, lever must be manually returned to neutral.

With lever in neutral, remote cylinder is hydraulically locked in position.

Float Position: Push lever forward, through retract, into detent to operate "float" feature. "Float" operation allows cylinder to extend and retract freely, such as when an implement follows ground contour. Manually return lever to neutral when "float" is no longer required.

Hydraulic Motor Operation

See USING REAR SCV TO OPERATE HYDRAULIC MOTOR in this section.

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Cab Shown


A-SCV I Lever
B-SCV II Lever
C-SCV III Lever

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