MAINTENANCE BASICS Check that the machine is unloaded before you check the tire pressure. Prior to start of work, measure the tire pressure of the cold tires. If the tire pressure is too low, the tire will be overloaded. If the tire pressure is too high, this will lead to formation of notches in the tire resulting in bursting of the tire when it is subjected to shock load. To avoid such damage, set the pressure of the tires accord- ing to the values given in the following table. If you are not sure, ask your tire dealer. Do not deflate the tire when the tire pressure increases due to a rise in temperature. For this reason, check and set the tire pres- sure before you start work, i.e.
when the tires are still cold. *) For 20 km/h only If the tires are too soft, increase the tire pressure accordingly. The following degree of resilience (tire loaded/unloaded) of the front tires can be used as the guideline for the visual check. Transport of normal loads (horizontal position of boom): approx. 15 - 25%. Digging (rear wheels lifted off the ground): approx. 25-30%.
7-19 TIRES RECOMMENDED TIRE PRESSURE on public roads during operation Manufacturer Size Type Front axle Rear axle Front axle Rear axle bar psi bar psi bar psi bar psi DUNLOP 12.5 - 20 MPT 10 PR TG32 1.5 22 1.75 26 2.75 40 1.5 22 DUNLOP 335/80 R20 EM SP T9 1.5 22 2.25 33 3.0 44 1.5 22 DUNLOP 405/70 R18 EM SP T9 1.5 22 2.0 29 2.5 37 1.5 22 DUNLOP 14.5 - 20 MPT 10 PR E91 1.5 22 1.75 26 2.0 29 1.5 22 DUNLOP *) 405/70 R20 PG75R 1.5 22 2.25 33 3.0 44 2.25 33 MICHELIN *) 335/80 R20 X M27 TL 1.0 14.5 1.75 26 2.5 37 1.75 26 MICHELIN 405/70 R20 X M27 TL 1.0 14.5 1.5 22 2.25 33 1.5 22 MICHELIN 375/75 R20 X M27 TL 1.0 14.5 1.5 22 2.25 33 1.5 22 BARUM 12.5 - 20 1.5 22 2.0 29 2.5 37 1.75 26