Lubrication and Service - Section 40 09/11 OM4054 Page 40-10 500 HOUR INSPECTION Perform the maintenance items for the 250 hour interval at this time, also. Truck Serial Number Site Unit Number Date ______________________ _______________ _______________ Hourmeter Name of Service Technician _____________ ___________________________________ TASK COMMENTS CHECKED INITIALS 1 Radiator - Check for clogged or damaged fins. Refer to Section C in the service manual for more informa- tion on radiator maintenance. 2 Transmission Oil Filter - a. Remove and replace the two filter elements. b. Remove and replace control valve filter. Refer to the service manual for service information.
3 Check Toe-In Adjustment - Check the steering toe-in adjustment and inspect the tires for abnormal wear. Adjust as necessary. Refer to the service manual for the adjustment procedure. 4 Bladder Accumulators - Pre-charge pressure must be checked every 500 hours. Failure to maintain correct pressure may result in bladder failures. Refer to the information in the service manual detailing bladder accumulator repair. Comprehensive instructions are outlined for properly maintaining bladder accumula- tors. 5 Front Wheel Bearings - Obtain an oil sample from each front wheel bearing oil cavity for analysis. Refer to Section G3 in the service manual for instructions.
6 Engine Damper - Check the grease level in the engine damper. Fill as necessary with Komatsu grease (427-12-11871). The grease level must be maintained level with the fill plug opening. 7 Frame And Rear Axle Housing - Wash the truck, clean all of the weld joints, and visually inspect the entire frame and axle housing for cracking or dam- age. 8 Torque Converter and Transmission Oil Pressure Checks - Check torque converter and transmission operating pressures. Refer to Section F2 in the ser- vice manual.