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The vacuum meter pump hydraulic system is designed to be operated with closed center tractor hydraulic systems (tractors with load sensing or pressure on demand hydraulics are classified as closed center systems.) Open center tractor hydraulics are NOT compatible with system.
Open planter flow control valve wide open to limit flow. Install vacuum adapter bundle on motor and control vacuum with tractor SCV.
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IMPORTANT:
Do not use open center tractor hydraulic system to operate vacuum pump. Permanent damage to tractor system may result due to overheating.
NOTE:
For non John Deere tractors, see dealer for motor return hookup.
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