Tires

causym CAUTION: Installing liquid ballast requires special equipment and training. Have the job done by your John Deere dealer or a tire service store.

Liquid ballast drive tires use a special air-liquid gauge (A). Check with valve stem at BOTTOM for the most accurate reading.

IMPORTANT: Inflation pressure in liquid filled tires should be checked frequently using an air-liquid gauge. Checking liquid filled tires with a standard air gauge will ruin the gauge. Any air leak in a liquid weighted tire results in a much greater decrease in pressure, because air volume is relatively small. Replace valve caps and rinse air-liquid gauge out after use.

The front tires are filled with calcium chloride solution at the factory, if machine is equipped with a "T-type" tank.

The following procedure is recommended when checking the pressure of liquid-weighted tires:

1. With the valve stem at the bottom of rim, remove the valve cap and check inflation pressure.

2. Rotate tire to get valve stem at top of rim and adjust tire pressure.

3. Replace valve cap.

For added stability and traction, liquid may be added to rear tires. Mix 56.75 kg (125 lb) of calcium chloride with 94 L (25 gal ) of water or fill tire with 117 L (31 gal ) of calcium chloride solution.

Use calcium chloride to prevent water from freezing. A mixture of 5 pounds of calcium chloride per gallon (2.2 kg per Liter) will not freeze solid above -45°C (-50°F).

N36585


A-Air-Liquid Gauge

AG,OUO1011,276 -19-27APR99-1/2

A solution of water and calcium chloride provides safe, economical ballast. Used properly, it will not damage tires, tubes or rims.

  Inflation Pressure
Tire Size kPa (bar) (psi)
11L-15 8PR (3-Wheel Front) 303 (3.0) (44)
7.5-20 6 PR (4-Wheel Front) 179 (1.8) (26)
14Lx16.1 10PR F2 (4-Wheel Front) 179 (1.8) (26)
12.4-38 8 PR (Rear) 221 (2.2) (32)

 

NOTE: Use of alcohol as liquid ballast is not recommended. Calcium chloride solution is heavier and cheaper.

AG,OUO1011,276 -19-27APR99-2/2