7000, 7020, 8000, and 8000T Series Row-Crop Tractors (General Hydraulic Information)

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 surgically removed within a few hours or gangrene may result.

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

IMPORTANT: Fan motor case drain hose (A) MUST be attached to low-pressure drain connection PRIOR to other hoses being connected. Case drain MUST have LESS THAN 172 kPa (1.72 bar) (25 psi) or fan motor will be damaged.

IMPORTANT: Installation of a Low-Pressure Drain Line Kit is required if towing tractor is not so equipped.

IMPORTANT: DO NOT USE other ports at the rear of the tractor (such as power-beyond ports) which may be similar in appearance and size to low-pressure drain port. Due to high back-pressure (over 172 kPa [1.72 bar] [25 psi]), drain connection to these ports WILL RESULT in fan motor damage.

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

A-Case Drain Hose

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The in-line planter flow control valve must be set to maximum. The tractor flow control valve is used to control vacuum level. SEEDSTAR ™ system is used to control variable rate drive.

SEEDSTAR is a trademark of Deere & Company

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