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OPERATION TROUBLES AND ACTIONS Problem Main causes Remedy Speed of travel, swing, boom, arm and bucket is slow Lack of hydraulic oil Adding oil to specified level, see CHECK BEFORE STARTING Pump generates abnormal noise Clogged strainer in hydraulic tank Clean, see EVERY 5000 HOURS SERVICE Excessive rise in hydraulic oil temperature Loose fan belt Adjust fen belt tension, see EVERY 250 HOURS SERVICE Add oil to specified level, see CHECK BEFORE STARTING Lack of hydraulic oil Track comes off Track too loose Adjusting track tension, see WHEN REQUIRED Abnormal wear of sprocket Bucket rises slowly, dose not rise Lack of hydraulic oil Adding oil to specified level, see CHECK BEFORE STARTING The engine speed does not change, even if the fuel adjusting dial is turned The swift deceleration switch is turned ON Turn off the swift deceleration monitor lamp in the monitor panel by depressing the swift deceleration switch 3 - 138 Chassis ( ) :
Always contact y our Komatsu distributor when dealing with these items. In cases of problem or causes which are not listed below, contact your Komatsu distributor for repairs.