Fuel Recommendations Kelas11 perawatan engine dan unit alat berat 6 1398

151 Diesel fuels that meet the specifications in the table will provide rated engine performance and full component life. In North America, diesel fuel that is identified as No. 1-D or as No. 2-D in ASTM D975 usually meets the specifications. Table 20 is for diesel fuels that are distilled from crude oil. Diesel fuels from other sources could exhibit detrimental properties that are not defined or controlled by this specification. Table 20 Caterpillar Specifications for Distillate Diesel Fuel Specifications ASTM Test Requirements Aromatics D1319 35 percent maximum Ash D482 0.02 percent weight maximum Carbon Residue on 10 percent Bottoms D524 1.05 percent weight maximum Cetane Number D613 35 PC minimum 40 Dl minimum Cloud Point {D9T maximum cloud point must not exceed ambient temperature Copper Strip Corrosion D130 No. 3 maximum Distillation D86 10 percent at 282°C 540°F maximum 90 percent at 360°G 680° F maximum Flash Point D93 Legal minimum API Gravity D287 30 minimum 45 maximum Pour Point D97 6°C 10°F minimum below ambient temperature SulfuM D3605 or D1552 3 percent maximum Viscosity2 D445 Kinematic at 40°C 104°F 1.4 cSt minimum 20.0 cSt maximum Water and Sediment D1796 0.1 percent maximum Water D1744 0.1 percent maximum Sediment D473 0.05 percent maximum Gums and Resins D381 10 mg100ml_ maximum 5.8 grainsUS gal maximum 152 Caterpillar fuel systems and engine components can operate on high sulfur fuels. Fuel sulfur levels affect exhaust emissions. High sulfur fuels also increase the potential for corrosion in internal components. Fuel sulfur levels above 1.0 percent may significantly shorten the oil change interval. For additional information, see Operation and Maintenance Manual, SEBU6250, Engine Oil. The values of the fuel viscosity are the values that are delivered to the fuel injection pumps. If a fuel with a low viscosity is used, the fuel should maintain a 1.4 cSt viscosity at the fuel injection pump. Fuels with a high viscosity might require fuel heaters in order to bring down the viscosity to a 20 cSt viscosity. For additional information, see Special Publication, SEBD0717, Diesel Fuel and Your Engine. Level I: Level I is a basic analysis which should be performed at every oil change or after every 250 hours of use. The following items are tested: 1. Glycol Concentration 2. Concentration of SCA 3. pH 4. Conductivity The results are reported, and appropriate recommendations are made according to the results. Level II: Level II is a comprehensive analysis which should be performed during semiannual maintenance or after every 1000 hours of use. The SO-S Coolant Analysis has the following four features: 1. Full analysis of Level I 2. Identification of metal corrosion and of contaminants 3. Identification of buildup of the impurities that cause corrosion 4. Identification of buildup of the impurities that cause scaling The results are reported, and appropriate recommendations are made. 153 CONVENTIONAL COOLANT ANTIFREEZE COOLING SYSTEM MAINTENANCE To ensure that the cooling system has adequate freeze protection, frequently check the antifreeze solution in cold weather. To monitor the concentration of supplemental cooling additive SCA, test the concentration. You may also send a coolant sample to your Caterpillar dealer in order to test the concentration of SCA. Check the concentration after every 250 service hours or after every month. The machine may need a supplemental coolant additive or a maintenance coolant additive element after every 250 service hours or after every month. NOTICE To prevent over-inhibiting the engines cooling system, do not use both supplemental coolant additive liquid and a supplemental coolant additive element if equipped at the same time. Use one method exclusively. When Diesel Engine AntifreezeCoolant is used with a supplemental coolant additive, perform the following maintenance procedures after every 3000 service hours or after every year. • Drain the cooling system. • Clean the cooling system. • Flush the cooling system. • Fill the cooling system. See Operation and Maintenance Manual, Cooling System Coolant - Change. When Diesel Engine AntifreezeCoolant is not used with a supplemental coolant additive, perform the flushing procedure after every year. After you drain the cooling system and after you refill the cooling system, make sure that the radiator cap is removed. Operate the engine until the coolant reaches normal operating temperature and the coolant level stabilizes. Fill the cooling system to the proper level by adding the coolant mixture

1. Cooling System Cleaning

Drain the cooling system. Clean the cooling system. Flush the cooling system. Perform these three procedures in order to remove the following pollutants: small particles, unwanted chemicals, scale and deposit formations. If cooling system maintenance is not performed, the engine may develop overheating problems. Overheating problems can cause severe damage to the engine and to components. Clean the cooling system if you observe any of the following problems: • The cooling system becomes contaminated. • The engine overheats. 154 • Foaming is observed. Use Caterpillar Fast Acting Cooling System Cleaner to clean harmful scale and corrosion. This cleaner dissolves the following pollutants: mineral scale, corrosion products, light oil contamination and sludge. Caterpillar Fast Acting Cooling System Cleaner is available from your Caterpillar dealer in the quantities that are listed below. Table 19 Caterpillar Fast Acting Cooling System Cleaner Part Number Size 4C-4609 .47 L .5 qt 4C-4610 .95 L 1 qt 4C-4611 3.8 L 1 US gal 4C-4612 19 L 5 US gal 4C-4613 208.5 L 55 US gal For proper use, follow the instructions that are listed on the product label.

2. SOS Coolant Analysis

Testing the coolant can be done at your Caterpillar dealer. Caterpillar SOS Coolant Analysis is the best way to monitor the condition of your coolant and your cooling system. SOS Coolant Analysis is a program that is based on periodic samples. The 8T-5296 Test Kit can be used to evaluate the concentration of SCA. However, the following modifications must be made in STEP 3 and in STEP 5. STEP 3- Add tap water to the vial up to the 20 ml mark. STEP 5- When the defined procedure is used, a concentration of 6 percent to 8 percent will yield between 20 drops and 27 drops. If the number of drops is below 20 drops, the concentration of SCA is low. If the number of drops is above 27 drops, the concentration of SCA is high. Make the appropriate adjustments to the concentration of SCA. If the concentration of SCA is above the maximum of 8 percent, drain some of the coolant mixture. Refill the system with acceptable water. Retest the concentration.

3. Extended Life Coolant ELC Cooling System Maintenance

Mixing Extended Life Coolant with other products reduces the Extended Life Coolant service life. Failure to follow the recommendations can reduce cooling system components life unless appropriate corrective action is performed.

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