3.3. Operation Operation When checking the tyre inflation pressure, check also for small scratches or peeling of the tire, for nails or pieces of metal which may cause punctures, and for any abnormal wear. Clearing fallen stones and rocks from the working area and main taining the surface will extend the tyre life and improve the eco nomical case of the machine. The specified air pressure values might deviate from the standard values under special conditions. If this is the case, please contact an authorised Komatsu dealer. Correct inflation pressure levels have a significant impact on the service life and efficiency of the tyres.
Only correct inflation pressures protect the tyres from getting damaged. Should the pressure rise as a result of heating, do not deflate the tyres. Check and adjust inflation pressures before moving off, i.e., with the tyres cold. In extremlely severe applications and in load and carry applications involving lenghty hauls, the correct inflation pressure should be determined by the respective tyre manufacturer or an authorised service outlet on the spot. If the deflection of the tyre is excessive, raise the inflation pressure accordingly (see section "Tyre pressure" on page 3-77).
3-78 WA90-5 – VEAM270100 TYRES RECOMMENDED AIR PRESSURE Manufacturer Designation Tread Front axle Rear axle bar psi bar psi DUNLOP 405/70R20 SPT9 2,75 40 2,5 36 DUNLOP 16/70-20 E91-2 2 29 1,75 26 DUNLOP 405/70R24 SPT9 2,75 40 2 29 DUNLOP 16/70-24 E91-2 2,25 33 1,75 25 DUNLOP 455/70R20 SPT9 2,25 33 2 29 CONTI 405/70R20 SPT9 3 44 2,75 40 MICHELIN 405/70R20 XZSL 2,6 38 2,2 31 MICHELIN 425/75R20 XZSL 2 29 1,8 26 MICHELIN 425/75R20 XM27 2 29 1,8 26 BRIDGESTONE 405/70R20 VUT 3 44 2,25 33 BARUM 405/70R24 NB38 3 44 2,75 40 GOODYEAR 400/70R24 IT530 2,6 38 2 29 GOODYEAR 400/80R24 IT520 2,2 32 1,8 26 BRIDGESTONE 17,5/65-20 FG 2,4 35 2 29