Komatsu — 250 HOUR LUBRICATION AND MAINTENANCE CHECKS

Maintenance - Section 40 OM4064 06/11 Page 40-10 Lubrication and Service 1. 2. 3. 4. 5. 6. 7. 250 HOUR LUBRICATION AND MAINTENANCE CHECKS Truck Serial Number Site Unit Number Date ______________________ _______________ _______________ Hourmeter Name of Service Technician _____________ ___________________________________ TASK COMMENTS CHECKED INITIA ENGINE - Refer to the engine operation and mainte- nance manual for the complete specifications regard- ing the engine lube oil specifications. NOTE: If the engine is equipped with the Centinel oil system, and/or the Eliminator filter system, the engine oil and filter change intervals are extended beyond 250 hours.

Refer to the engine service manual for specific oil and filter change intervals. a. Change the engine oil. Refer to the engine service manual for oil specifications. b. Replace the oil filters. NOTE: When installing the spin-on filter elements, fol- low the instructions, as specified by the filter manu- facturer. The tightening instructions are normally printed on the outside of the filter. DO NOT use a wrench or strap to tighten the filter elements. c. If the truck is equipped with a reserve engine oil tank, change the reserve tank oil filter. d. Check the fan belt tension. Refer to the engine service manual for fan belt adjustment instruc- tions. COOLING SYSTEM - a.

COOLANT MIXTURE - Check for proper coolant mixture. Add coolant as required. b. COOLANT FILTERS - Change coolant filters. c. COOLING SYSTEM HOSES - Check cooling system hoses for damage and signs of deteri- oration. Refer to the engine maintenance manual for coolant filter replacement instructions and proper coolant mix- ture instructions. FUEL FILTERS - Change the fuel filters (fuel separa- tors). Refer to engine Operation & Maintenance man- ual for specific filter replacement instructions. FUEL TANK - Drain water and sediment from fuel tank. STEERING LINKAGE - Check the torque for the tie rod’s pin retaining nuts - 712 N·m (525 ft lb).

Check the torque on tie rod clamp nuts - 420 N·m (310 ft lb). BATTERIES - Check the electrolyte level and add water, if necessary. WHEEL MOTORS - Take an oil sample for oil analy- sis. Truck Serial Number Site Unit Number Date ______________________ _______________ _______________ Hourmeter Name of Service Technician _____________ ___________________________________ TASK COMMENTS CHECKED INITIA LS ENGINE - Refer to the engine operation and mainte- nance manual for the complete specifications regard- ing the engine lube oil specifications. NOTE:

If the engine is equipped with the Centinel oil system, and/or the Eliminator filter system, the engine oil and filter change intervals are extended beyond 250 hours. Refer to the engine service manual for specific oil and filter change intervals. a. Change the engine oil. Refer to the engine service manual for oil specifications. b. Replace the oil filters. NOTE: When installing the spin-on filter elements, fol- low the instructions, as specified by the filter manu- facturer. The tightening instructions are normally printed on the outside of the filter. DO NOT use a wrench or strap to tighten the filter elements. c.

If the truck is equipped with a reserve engine oil tank, change the reserve tank oil filter. d. Check the fan belt tension. Refer to the engine service manual for fan belt adjustment instruc- tions. COOLING SYSTEM - a. COOLANT MIXTURE - Check for proper coolant mixture. Add coolant as required. b. COOLANT FILTERS - Change coolant filters. c. COOLING SYSTEM HOSES - Check cooling system hoses for damage and signs of deteri- oration. Refer to the engine maintenance manual for coolant filter replacement instructions and proper coolant mix- ture instructions. FUEL FILTERS - Change the fuel filters (fuel separa- tors).

Refer to engine Operation & Maintenance man- ual for specific filter replacement instructions. FUEL TANK - Drain water and sediment from fuel tank. STEERING LINKAGE - Check the torque for the tie rod’s pin retaining nuts - 712 N·m (525 ft lb). Check the torque on tie rod clamp nuts - 420 N·m (310 ft lb). BATTERIES - Check the electrolyte level and add water, if necessary. WHEEL MOTORS - Take an oil sample for oil analy- sis.