MAINTENANCE PLAN 4.7.7 MAINTENANCE AFTER THE FIRST 250 HOURS OF OPERATION Carry out the following maintenance operations after the first 250 hours, together with those to be performed “EVERY 250 HOURS”. FRONT AXLE OIL CHANGE REAR AXLE OIL CHANGE HYDRAULIC TRANSMISSION OIL CHANGE HYDRAULIC TRANSMISSION OIL FILTER CHANGE ENGINE VALVE CLEARANCE CHECK AND ADJUSTMENT HYDRAULIC OIL DRAIN FILTER CHANGE For details on the various maintenance operations, see the sections “EVERY 500 HOURS” and “EVERY 1000 HOURS”. For checks and adjustments, contact your Komatsu Utility Dealer.
4.7.8 MAINTENANCE EVERY 250 HOURS OF OPERATION Carry out the following operations together with those to be performed every 50 HOURS: RWA02890 186 The fan belt can be reached after opening the engine hood (See “3.5.1 ENGINE HOOD”). The control is manual: press the belt (1) with a thumb on the in- dicated pont with a force equal to approx. 10 kg; the resulting de- flection must be approximately 10÷15 mm. If the deflection exceeds this value, loosen the screw (2) that fas- tens the alternator (3) and, with a lever inserted between the en- gine block and casing, make the alternator slide. Lock the screw (2) again and check again. Use a 12 mm spanner.
A -Fan pulley B -Alternator pulley IMPORTANT • If the belt is worn, change it and check the tension again after a few hours of operation.