Adjust Track Sag

CAUTION:

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Grease for track adjuster cylinder is under high pressure. Never remove grease fitting to release the grease. If grease does not escape immediately from vent hole when check valve nut is loosened, slowly drive machine in forward and reverse directions until grease escapes. DO NOT disassemble parts unless you know the correct procedure and have correct tools. See your authorized John Deere dealer.

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 may call the Deere & Company Medical Department in Moline, Illinois, or other knowledgeable medical source.


Decreasing Track Sag

  1. T139747B
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    T139748B
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    1 - Cap Screw

    2 - Lubrication Fitting

    Remove cap screw (A) and open cover to access lubrication fitting.


  2. Apply grease to lubrication fitting (B) using a 55 200 kPa (552 bar) (8000 psi) capacity grease gun and special fitting from tool kit. (See Fuels and Lubricants chapter for grease specifications.)

  3. Drive machine slowly in forward and reverse directions to allow track adjuster cylinder to fully adjust.

  4. Check track sag again. (See Check track sag in this chapter.)


Increasing Track Sag

  1. Remove cap screw (A) and open cover to access lubrication fitting.

  2. Loosen lubrication fitting (B) until grease escapes and then tighten.

  3. Drive machine slowly in forward and reverse directions to allow track adjuster cylinder to fully adjust.

  4. Check track sag again. (See Check track sag in this chapter.)

For more information about track sag, see Track Sag General Information in Maintenance chapter.

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