John Deere Corn Heads 612C

Inspect condition and tension of Auger Chain (A)

Inspect condition and tension of Row Unit Drive Chain (B)

Inspect condition and tension of Gatherer Chains (C)

Raise corn head and engage feeder house safety stop

Operate header to warm oil prior to draining

Remove drain plug (A), disengage safety stop, and lower header to drain oil

Remove check plug (B) and access door (C)

Add SAE 80/90 gear lube through access door opening (D) until level with bottom of check plug hole (E)

Inspect hydraulic hoses periodically – at least once per year – for leakage, kinking, cuts, cracks, abrasion, blisters, corrosion, exposed wire braid or any other signs of wear or damage.

Replace worn or damaged hose assemblies immediately with John Deere approved replacement parts.

Escaping fluid under pressure can penetrate the skin causing serious injury.

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 hands 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. Doctors unfamiliar with this type of injury should reference a knowledgeable medical source. Such information is available in English from Deere & Company Medical Department in Moline, Illinois, U.S.A., by calling 1-800-822-8262 or +1309-748-5636;

Hydraulic hoses inspected for leakage, kinking, cuts, cracks, abrasion, blisters, corrosion, exposed wire braid or any other signs of wear or damage?

Worn or damaged hose assemblies replaced with John Deere approved replacement parts?

Replace Oil in Row Unit Gear Case

Operate header to warm row unit gear case oil

Completely raise header and engage feeder house safety stop

Shut OFF engine, set parking brake, and remove key

Clean area around inspection plug/dipstick (A) to avoid dirt and debris from entering gear case

Remove drain plug (B) and allow oil to drain

Add TY6296 80W 90 GL-5 gear oil through dipstick port