7000 Series and 8000 Series Row-Crop Tractors (General Hydraulic Information)

causym CAUTION: Escaping fluid under pressure can penetrate the skin, causing serious injury to you or others. Avoid the hazard by relieving pressure before disconnecting hydraulic or other lines. Tighten all connections before applying pressure. Search for leaks with a piece of cardboard. Protect hand and body from high-pressure fluids.

If an accident occurs, see a doctor immediately. Any fluid injected into the skin must be removed within a few hours or gangrene can result.

causym CAUTION: Hydraulic hoses can fail due to physical damage, kinks, age, and exposure. Check hoses regularly and replace as necessary.

  • Fan motor or vacuum motor case drain hose (A) MUST be attached to low-pressure drain connection PRIOR to inlet and return hoses being connected. Case drain MUST have LESS THAN 172 kPa (1.72 bar) (25 psi) or fan motor damage occurs.
  • Installation of a Low-Pressure Drain Line Kit is required when towing tractor is not equipped. Refer to PROTECTING HYDRAULIC MOTOR SEALS-LOW-PRESSURE (CASE) DRAIN CONNECTION in Preparing Tractor section for appropriate kit.

Vacuum and variable rate drive systems must be shut off by pushing SCV into "float" position to avoid damaging pressure spikes in hydraulic system.

When each vacuum motor is connected to its own SCV the tractor cab controls are used to adjust vacuum. The in-line flow control valves must be set to maximum.

When both vacuums are connected to one SCV or to power beyond, the in-line planter flow control valve is used to adjust vacuum. Tractor flow control must be set to maximum.

A53393


A-Case Drain Hose
B-Low-Pressure Drain Coupler

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CCS control valve is used to control tank pressure.

SeedStar ™ system is used to control variable rate drive.

SeedStar is a trademark of Deere & Company

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