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MA-36 < PERIODIC MAINTENANCE > ENGINE MAINTENANCE (VK56DE) 4. Install the Tool by installing the radiator cap adapter onto the radiator neck opening. Then attach the gauge body assembly with the refill tube and the venturi assembly to the radiator cap adapter. 5. Insert the refill hose into the coolant mixture container that is placed at floor level. Make sure the ball valve is in the closed position. • Use recommended coolant or equivalent. Refer to MA-18, "FOR USA AND CANADA : Fluids and Lubri- CAUTION: Never use any cooling system additives such as radiator sealer. Additives may clog the cooling system and cause damage to the engine, transmission and/or cooling system. 6. Install an air hose to the venturi assembly, the air pressure must be within specification. CAUTION: The compressed air supply must be equipped with an air dryer. 7. The vacuum gauge will begin to rise and there will be an audible hissing noise. During this process open the ball valve on the refill hose slightly. Rising coolant will be visible in the refill hose. After the refill hose is full of coolant, close the ball valve. This will purge air trapped in the refill hose. 8. Continue to draw the vacuum until the gauge reaches 28 inches of vacuum. The gauge may not reach 28 inches in high altitude locations. Refer to the following table for expected vacuum read- ings. 9. When the vacuum gauge has reached the specified amount, disconnect the air hose and wait 20 seconds to see if the system loses vacuum. If the vacuum level drops, perform necessary repairs to the system and repeat steps 6 - 8 to bring the vacuum to the specified amount. Recheck for leaks. 10. Place the coolant container (with the refill hose inserted) at the same level as the top of the radiator. Then open the ball valve on the refill hose so the coolant will be drawn up to fill the cooling system. The cooling system is full when the vacuum gauge reads zero. CAUTION: Do not allow the coolant container to get too low when filling, to avoid air from being drawn into the cooling system. 11. Remove the Tool from the radiator neck opening and install the radiator cap. and top up the system as necessary before installing the vented reservoir cap. 14. Install the engine under cover. Refer to EXT-15, "Removal and Installation" Tool number : KV991J0070 (J-45695) Cooling system capacity : Refer to USA AND CANADA : Flu- Compressed air : 549 - 824 kPa (5.6 - 8.4 kg/cm 2 , 80 - 119 psi) LLIA0058E Altitude above sea level Vacuum gauge reading 0 - 100 m (328 ft) : 28 inches of vacuum 300 m (984 ft) : 27 inches of vacuum 500 m (1,641 ft) : 26 inches of vacuum 1,000 m (3,281 ft) : 24 - 25 inches of vacuum LLIA0057E 2011 Pathfinder |