Changing a wheel

Changing a wheel

Read and observe: "Wheels and tyres - Safety instructions". "Tyre pressure - Safety instructions".

• Park the machine on firm and level ground. • Block the articulated joint. • Apply the parking brake. • Loosen the wheel-nuts on the wheel to be replaced by about one turn. • If a rear wheel is damaged, raise the relevant side of the machine with the blade, turning the blade in such a way that one end of the blade is in front of the damaged wheel. Then raise the machine with the appropriate lifting cylinder. • If a front wheel is damaged, raise the machine with the blade or with the front grading blade (optional equipment). • Prop up the raised axle with squared timber so that it cannot sink back down.

• Secure the machine as described under "Securing the machine". • Deflate the tyres. • Unscrew the wheel nuts and take off the wheel, taking care not to damage the threads of the wheel nuts.

• Do not lose the centering rings, spring washers and wheel-nuts. Reuse them when refitting the wheel.

• Fitting the new wheel: - Inflate the tyre with a pressure of approx. 1 bar. - Observe the instructions set out under "Tyre tread position". - Be sure not to damage the threads of the wheel studs. • Tighten the wheel nuts by hand. • Remove the supports under the lifted axle and lower the axle.

• Tighten the wheel nuts crosswise with the prescribed torque. Torques cf. "Fastening of wheels". • Inflate the tyres with the correct pressure. See "Tyre inflation pressures" and "Tyre pressure -

Safety instructions". • Check the wheel nuts after 5 operating hours with a torque wrench for tightness.

Fastening of wheels

Check the wheel nuts for tightness after 5 OPERATING HOURS and retighten using a torque wrench. Check all wheels in accordance with servicing plan W for tightness. Flat collar nut with spring washer black or galvanized 450 Nm Flat collar nut with pressure plate black or galvanized 500 Nm

40001396.00-en

Tyre tread position

When fitting wheels with tread directiondependent tyres, pay attention to the direction of the tyre tread . O&K recommends fitting the four rear wheels as shown in Fig. 1. This tyre tread position yields the highest traction performance for forward travel .

Fig. 1 Fit the free-wheeling front wheels with the tread against the tread direction of the rear wheels. For all-wheel driven machines, set the front-wheel tyre tread pattern facing in the same direction as that of the rear wheels.