Komatsu — RADIATOR FILL PROCEDURE

OM4054 09/11 Lubrication and Service - Section 40 Page 40-1 LUBRICATION AND SERVICE Preventive maintenance contributes to the long life and dependability of the truck and its components. The use of proper lubricants and the performance of checks and adjustments at recommended intervals are crucial. Unacceptable Practices Use of high-silicate anti-freeze. Under concentration or over concentration of Extended Service Additive (SCA). Lubrication requirements reference the lube key found in the lubrication chart. For detailed service requirements for specific components, refer to the shop manual. Use of anti-freezes/coolants that are not fully formulated for extended service intervals.

Use of sealing additives (stop-leak) in the cooling system. The service intervals presented here are in hours of operation. Oil change intervals are recommended in the absence of an oil analysis program which may determine different intervals. However, if the truck is being operated in extreme conditions, some or all of the intervals may need to be performed more fre- quently. Use of soluble oils in the cooling system. Use of poor-quality water. See the engine manufacturer’s specifications for water quality requirements. Use of anti-freeze, Extended Service Additive (SCA) or coolant filter(s) that do not meet the engine manufacturer’s specifications.

Refer to the engine service manual when servicing the engine or any of its components. Use of Treated Water coolant. Use of coolants with less than 40 percent antifreeze. RADIATOR FILL PROCEDURE The cooling system is pressurized due to thermal expansion of coolant. DO NOT remove the radia- tor cap while the engine is hot. Severe burns may result. 1. With the engine and coolant at ambient temper- ature, depress the pressure relief to remove cooling system pressure. Slowly, remove the radiator cap. NOTE: If coolant is added using the quick fill system, the radiator cap must be removed prior to adding coolant.

COOLANT SPECIFICATIONS For ambient temperatures of -25° F (-32° C) and above, use a standard 50/50 anti-freeze-to-water mixture. 2. Fill the radiator with the proper coolant mixture as specified by the engine manufacturer. Fill until coolant reaches the radiator cap area. For arctic climates with ambient temperatures between -25° F (-32° C) and -65° F (-54° C), use a 60/40 anti-freeze-to-water mixture. 3. Install the radiator cap. 4. Allow the engine to idle for 5 minutes. Shut the engine off and wait for the engine to cool. NOTE: Do not use propylene glycol coolant in arctic climates. Only use ethylene glycol coolants. 5. Check the coolant level.

If the radiator is not full, repeat the previous steps. Any excess coolant will be discharged through the vent hose after the engine reaches normal operating tempera- ture. SERVICE CAPACITIES Engine Crankcase (including lube oil filters) Liters US Gallons 193 51 Cooling System 532 141 Hydraulic System Refer to Hydraulic Tank Ser- vice in this chapter 900 238 Differential Case 297 78 Final Drive Case (each planetary) 120 32 Fuel Tank (diesel fuel only) 2120 560 Transmission Case including torque converter 153 41