Komatsu — Contents

FOREWORD Contents Table to enter serial No. and distributor Outlines of service .............................................................................................................................................. 4-4 Handling oil, fuel, coolant, grease and performing oil clinic ............................................................................. 4-4 Oil ............................................................................................................................................................... 4-4 Fuel.............................................................................................................................................................

4-4 Coolant ....................................................................................................................................................... 4-5 Grease ........................................................................................................................................................ 4-5 Carrying out KOWA (Komatsu Oil Wear Analysis) ..................................................................................... 4-5 Storing oil and fuel ......................................................................................................................................

4-6 Filters .......................................................................................................................................................... 4-7 Biodegradable hydraulic oil and lubricants ................................................................................................. 4-7 Outline of electric system................................................................................................................................. 4-7 Wear parts ............................................................................................................................................................

4-8 Wear parts list.................................................................................................................................................. 4-8 Fuel, coolant and lubricants .............................................................................................................................. 4-9 Lubrication chart ............................................................................................................................................ 4-10 Proper selection of fuel, coolant and lubricants .............................................................................................

4-11 Recommended brands, recommended quality for products other than komatsu genuine oil ........................ 4-13 Standard tightening torques for bolts and nuts ............................................................................................. 4-14 Torque list ...................................................................................................................................................... 4-14 Periodic replacement of safety critical parts ..................................................................................................

4-16 Safety critical parts......................................................................................................................................... 4-16 Maintenance schedule chart ............................................................................................................................ 4-18 Service schedule............................................................................................................................................ 4-18 Service procedure .............................................................................................................................................

4-20 Initial 50 hours service (only after the first 50 hours) ..................................................................................... 4-20 Check for loose wheel hub bolts, tighten .................................................................................................. 4-20 Initial 250 hours service (only after the first 250 hours) ................................................................................. 4-20 When required ...............................................................................................................................................

4-21 Check, clean, or replace air cleaner element............................................................................................ 4-21 Dust pre-extractor "Turbo II": check, clean ............................................................................................... 4-24 Clean inside of cooling system ................................................................................................................. 4-25 Check oil level in transfer case, add oil.....................................................................................................

4-28 Check axle oil level, add oil....................................................................................................................... 4-29 Clean axle case breather.......................................................................................................................... 4-30 Clean air conditioner condenser ............................................................................................................... 4-30 Check window washing fluid level, add fluid.............................................................................................

4-31 Cleaning radiator fins using the reversible fan.......................................................................................... 4-32 Clean radiator fins and cooler fins ............................................................................................................ 4-33 Clean transfer oil cooler fins ..................................................................................................................... 4-34 Check electrical intake air heater..............................................................................................................

4-34 Replace bolt on cutting edge .................................................................................................................... 4-34 Replace bucket teeth ................................................................................................................................ 4-35 Check air conditioner ................................................................................................................................ 4-36 Replace slow blow fuse ............................................................................................................................

4-37 Checking function of accumulator............................................................................................................. 4-38 Selection and inspection of tires ............................................................................................................... 4-39 Check before starting..................................................................................................................................... 4-41 Every 50 hours service ..................................................................................................................................

4-42 Drain water, sediment from fuel tank ........................................................................................................ 4-42 Every 100 hours service ................................................................................................................................ 4-43 Lubricate rear axle pivot pin...................................................................................................................... 4-43 Clean element in air conditioner fresh air filter..........................................................................................

4-43 Check oil level in hydraulic tank, add oil ................................................................................................... 4-44 Every 250 hours service ................................................................................................................................ 4-45 Check battery electrolyte level.................................................................................................................. 4-45 Check parking brake.................................................................................................................................

4-47 Check air conditioner compressor belt tension, adjust ............................................................................. 4-47 Check for loose wheel hub bolts, tighten .................................................................................................. 4-48 Clean element in air conditioner recirculation filter ................................................................................... 4-49 WA250PZ-5 – VEAM945101 1-13