Hydraulic Connections Recommendations

A64361-UN-11MAR09

Extend Symbol

A64362-UN-11MAR09

Retract Symbol

Extend and Retract symbols are on SCV cover.

Refer to tractor operator’s manual for specific hydraulic operational details.

IMPORTANT: Case drain hose must be attached prior to any hose being connected.

Hose Connections1				Function Settings For John Deere Tractors
Hose Identification	SCV	Pressure	Return	Flow	Detent (Time)
Frame Functions and CCS System (if equipped)	I	Extend	Retract	10 Maximum	Constant “C” CCS level controlled with CCS Valve
Independent Markers (if equipped)	II	Extend	Retract	Start at 5	10 seconds or as required for full extend and retract
Vacuum System (Connected to Separate SCVs and controlled with Cab Functions)	III and IV	Retract	Extend	Start at 4 and adjust as required to obtain desired vacuum pressure	Constant “C”
Vacuum System (Connected to one SCV and controlled with in line valves)2	IV	Retract	Extend	10 Maximum	Constant “C”
Variable Rate Drive on SCV (if equipped)	V	Retract	Extend	10 Maximum	Constant “C”
Vacuum System (Connected to power beyond and controlled with in line valve)		Power Beyond Pressure	Power Beyond Return
Variable Rate Drive on Power Beyond with Load Sense34		Power Beyond Pressure	Power Beyond Return

CAUTION: Hydraulic hoses can fail due to physical damage, kinks, age, and exposure. Check hoses regularly. Replace damaged hoses.

IMPORTANT: Vacuum and Variable Rate Drive return hoses, with special tip, must be connected to tractor “Extend” port. Avoid damaging pressure spikes; shut vacuum motor and variable rate drive off by placing SCV lever in “Float” position.

CCS control valve is used to control CCS tank pressure.

SeedStar™ system is used to control variable rate drive.