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AC200625 Cylinder block AC ON-VEHICLE SERVICE ENGINE COOLING 14-22 5. Apply the designated sealant to the screw area of the cylinder block drain plug, and then tighten to No.4171 or equivalent Tightening torque: 40 ± 5 N⋅ m <4G1> 44 ± 5 N⋅ m <4G6> 6. Securely tighten the drain plug of the radiator. CAUTION Do not use alcohol or methanol anti-freeze or any AC303612AB MB991871 AIR HOSE 8. By referring to the section on coolant, select an appropriate concentration for safe operating −31° C). Recommended antifreeze: DIAQUEEN SUPER LONG LIFE COOLANT or equivalent Quantity: 5.0 L <4G1> NOTE: For how to use special tool MB991871, 9. Reinstall the radiator cap. thermostat opens. 11.After repeatedly revving the engine up to 3,000 r/min several times, then stop the engine. 12.Remove the radiator cap after the engine has become cold, and pour in coolant up to the brim. CAUTION Do not overfill the radiator condenser tank. between the "F" and "L" mark if necessary. CONCENTRATION MEASUREMENT M1141001100352 Measure the temperature and specific gravity of the Standard value: 30 − 60% (allowable concentra- tion range) Recommended antifreeze: DIAQUEEN SUPER LONG LIFE COOLANT or equivalent CAUTION If the concentration of the anti-freeze is below COOLING FAN MOTOR DRIVE CONTROL M1141006100250 1. Remove the cooling fan motor drive control unit connector. AC103195 Y1716AU 1 2 3 AC Cooling fan motor 2. Turn the ignition switch to the "ON" position, and measure the voltage between terminal 1 and 3 at Standard value: system voltage |