OTR Goodyear

http://otr.goodyear.com

Produced by Goodyear Europe

114/0206/LUX-ENG

Goodyear Luxembourg Tires S.A.Av. Gordon Smith L-7750 Colmar-Berg Telephone Telefax

(352) 8199-1

(352) 8199 2181

Chafer Bead Bundle

Flexible

VALVE CAPS

Valves must

The valve cap is the primary air seal. Valve caps are always

made of metal and have a rubber sealing ring. Plastic dust

caps are not suitable for field service.

TYRE TECHNOLOGY

LIQUID BALLASTING

TYRE TECHNOLOGY

SAFETY INSTRUCTIONS

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be filled with liquid. A 100% fill can cause an unsafe pressure rise under load.

A solution of calcium chloride and water is recommended for liquid filling. It offers:

–Additional weight (up to 50%) over plain water –It is not harmful to rubber –It is plentiful and low in cost –It is an effective antifreeze solution

BALLASTED TYRES

Increasing the load on the drive axle offers many advantages:–Improved traction –Increased drawbar pull –Less slippage –Less pressure loss –Less tread wear –Less bounce

–Less fuel consumption

The simplest way to add weight is to partially fill the tyres

with liquid. No less than 75% of the tyre's volume should

GENERAL

–Do not mount or demount tyres without proper training.–Follow all procedures and safety instructions exactly.–Do not be careless or take chances.

–If you are uncertain about proper mating of parts,consult an expert.

–Always stand clear of a tyre/rim assembly that is being deflated or inflated.

–Use a clip-on chuck. Use inflation hose long enough to stand to side of tyre. Do not stand in front or back of tyre assembly.

–Confirm that the correct components are used

and that the new components are of the same size and type.

–Never, under any circumstances, attempt to rework, weld, heat or braze any rim components that are cracked, broken or damaged.

–Never hammer on rims or other components while tyre is fully or partially inflated.

–If necessary to tap components together, mallets with faces of:-rubber -lead -plastic -brass

–Never introduce a flammable substance into a tyre before,

during, or after mounting

Tubeless tyres can be ballasted. Calcium chloride solution will not harm rims if a minimum of 75% fill is used.

A corrosion-proof gauge should be used to check inflation pressures. The valve must be in the highest position when

pressure is checked. This gives the most accurate reading.SPECIAL CONSIDERATIONS FOR BALLASTED TYRES

Before adding ballast, tyres must be seated with air. Inflate:–Grader tyres = 3.5 Bar

–Tyres less than 29" in diameter = 5.25 Bar –Tyres 29" and larger in diameter = 6.25 Bar

After seating, exhaust air and add ballast. Tubes filled with calcium chloride must be equipped with special sealed-in base valves. These prevent separation of the rubber valve

base and valve metal.

The 1167 divisor is established by:Volume of Litre Water = 1000 cu. cm Swell Factor = 167 cu. cm

Volume of 1 Litre H 2O +.42 kg. CaCl 2=1167 cu. cm

Swell factors will vary with the amount of CaCl 2added.Other swell factors are available from any Goodyear OTR Sales or Service office.

Weight can be found by:

Weight of Water = Litres x 1+Weight of CaCl 2=Litres x .42Ballast Weight in Kilograms

MIXING THE CALCIUM CHLORIDE SOLUTION

The amount of calcium chloride needed to prevent freezing varies with the temperature.

Sp. Gravity @CaCl 2/Water Freezes Below 18°C Kg/L °C 1.0000.0001.050.08-61.100.18-141.150.28-231.218.42-341.250

.50

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The amount of CaCl 2/Water needed for earthmover tyres can be easily calculated. The volume of the tyre must be known.Then use the formula:

3/4 Vol. (in cu. cm) = Litres Water

1167

DEMOUNTING

Before removing any rim or wheel component (i.e., nuts or rim clamps):

DO

–exhaust all air from a single tyre

–exhaust all air from both tyres of a dual assembly –remove valve core completely to assure all air

is exhausted from tyre

–remove both cores from dual assembly –run a piece of wire through stem to be sure it's not plugged

–use approved eye protector

–use mechanical aids when removing heavy rim

components

INSPECTION

–Clean and repaint rims to stop corrosion and facilitate mounting and component checks.

–Clean dirt and rust from lock ring and gutter to ensure proper seating.

–Check and replace all rim components which are cracked,badly worn, severely rusted or damaged in any way.

–Don't reinflate a tyre that has been run flat until you inspect the tyre, tube, flap, rim and wheel assembly.–Double check the side ring, flange bead seat, lock ring and

O-ring to ensure they are secure in the gutter before inflation.

Before performing any services on off-the-road tyres, read and understand all safety precautions.

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