Altima 2.5 SL L4-2.5L (QR25DE) (2002)
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Use a screwdriver to move the Torque Converter up or down to align the Torque Converter bolt holes with the Flex Plate bolt holes. See Figure H12.
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Make sure the bolt "shoulder is fully seated in the mounting hole.
Engine Block Alignment Dowels (Altima and Sentra)
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Make sure the new engine has the alignment dowels installed in the rear of the block. There should be two of them (located diagonal to each other).
Filling (50/50 Mixture) Coolant System (Altima and Sentra)
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Use genuine Nissan engine coolant.
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Use the Engine Coolant Refill Tool # J-45695 to ensure complete filling without air bubbles ("pockets") in the cooling system.
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For proper heater performance, it is IMPORTANT that the cooling system be filled with an accurate mixture of 50% coolant and 50% water and all
air bubbles be purged from the system.
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See NTB02-047a (2002 - 2003 Altima: Poor Heater Performance) for additional information on Altima cooling system refill procedures.
Torque Specifications
A/T and M/T Bell Housing Bolt Tightening Sequence (Altima and Sentra)