Changing a wheel

Changing a wheel

40001396.00-en

Read and observe: “Wheels and tyres, safety instructions”. “Tyre pressure, safety instructions”.

• Park the machine on firm and level ground. • Block the articulated joint. • Engage the parking brake. • Loosen the wheel nuts on the wheel to be replaced by about 1 turn. • If a rear wheel is damaged, raise the relevant side of the machine with the blade. Turn the blade so 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. • Take care not to damage the threads of the wheel nuts. • Do not lose the centring rings, spring washers and wheel-nuts and re-use them when refitting the wheel. • Fitting the new wheel: - Inflate the tyres to a pressure of approx. 1 bar. - Observe the instructions 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. For torques see “Fastening of wheels”. • Inflate the tyres to the correct pressure. See

“Tyre 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 as per servicing plan W for tightness. Flat collar nut with spring washer black or galvanised: 450 Nm Flat collar nut with pressure plate black or galvanised: 500 Nm

Tyre tread position

When fitting wheels with tread directiondependent tyres, pay attention to the direction of the tyre tread. We recommend 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.