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    Nissan 240SX/Altima 1993-1998 Repair Guide

    Oil Pan

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    CAUTION
    The EPA warns that prolonged contact with used engine oil may cause a number of skin disorders, including cancer! You should make every effort to minimize your exposure to used engine oil. Protective gloves should be worn when changing the oil. Wash your hands and any other exposed skin areas as soon as possible after exposure to used engine oil. Soap and water, or waterless hand cleaner, should be used.


    WARNING
    Operating the engine without the proper amount and type of engine oil will result in severe engine damage.

    REMOVAL & INSTALLATION



    See Figures 1 and 2



    Click image to see an enlarged view

    Fig. Fig. 1: Insert a seal breaking tool and tap along the edges to cut through the liquid gasket. Do not use a screwdriver or scraper, as this will damage the metal



    Click image to see an enlarged view

    Fig. Fig. 2: Proper bead dimensions of the liquid gasket

    Altima

    See Figures 3, 4, 5, 6 and 7



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    Fig. Fig. 3: Exploded view of the oil pan assembly-Altima



    Click image to see an enlarged view

    Fig. Fig. 4: Loosen the illustrated bolts to remove the center member-Altima



    Click image to see an enlarged view

    Fig. Fig. 5: For areas marked with a star, apply liquid gasket around the outer side of the bolt hole



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    Fig. Fig. 6: Bolt tightening sequence for Altima's aluminum oil pan. (Loosen the bolts in the opposite order of tightening)



    Click image to see an enlarged view

    Fig. Fig. 7: Bolt tightening sequence for Altima's steel oil pan. (Loosen the bolts in the opposite order of tightening)

    1. Disconnect the negative battery cable.
    2.  
    3. Raise and support the vehicle safely.
    4.  
    5. Remove the engine undercover.
    6.  
    7. Drain and recycle the engine oil.
    8.  
    9. Remove the bolts securing the steel oil pan to the aluminum oil pan in the reverse order of their illustrated tightening sequence.
    10.  
    11. Install a seal cutter between the steel oil pan and the aluminum oil pan.
    12.  
    13. Tapping the cutter with a hammer, slide it around the entire edge of the oil pan. Take care not to damage the aluminum oil pan.
    14.  
    15. Remove the steel oil pan.
    16.  
    17. Remove the baffle plate and oil strainer.
    18.  
    19. Support the transaxle with a jack and the engine with a hoist.
    20.  
    21. Remove the center suspension member.
    22.  
    23. Remove the A/C compressor and lay it aside.
    24.  

    Do not disconnect the A/C compressor lines.

    1. Remove the rear cover plate.
    2.  
    3. Remove the aluminum oil pan retaining bolts in reverse order of the illustrated tightening sequence.
    4.  
    5. Insert a seal cutter between the oil pan and the cylinder block.
    6.  
    7. Tapping the cutter with a hammer, slide it around the entire edge of the oil pan. Take care not to damage the aluminum oil pan.
    8.  
    9. Lower the oil pan from the cylinder block and remove it from the engine.
    10.  

    To install:
    1. Carefully scrape the old gasket material away from the pan and cylinder block mounting surfaces, then apply a continuous bead (3.5-4.5mm) of liquid gasket around the oil pan. Install the pan within five minutes or else this step will have to be repeated.
    2.  
    3. Install the aluminum oil pan and tighten the mounting bolts, in the indicated sequence, to 13 ft. lbs. (17.5 Nm).
    4.  
    5. Install the baffle plate.
    6.  
    7. Install the steel oil pan, and tighten in the indicated sequence to 61 inch lbs. (7 Nm).
    8.  
    9. Wait 30 minutes before refilling the crankcase to allow the sealant to cure properly.
    10.  
    11. Install the rear cover plate.
    12.  
    13. Install the front suspension member.
    14.  
    15. Install the A/C compressor.
    16.  
    17. Install the center suspension member.
    18.  
    19. Install the engine undercover.
    20.  
    21. Lower the vehicle.
    22.  
    23. Fill the engine with the proper grade and viscosity of oil.
    24.  
    25. Connect the negative battery cable.
    26.  
    27. Start the engine and check for leaks.
    28.  

    240SX

    See Figures 8 and 9



    Click image to see an enlarged view

    Fig. Fig. 8: Loosen the illustrated bolts to remove the center member-240SX



    Click image to see an enlarged view

    Fig. Fig. 9: The oil pan used on the 240SX is a single-piece design and is removed as an assembly from the vehicle

    1. Disconnect the negative battery cable.
    2.  
    3. Raise and support the vehicle safely.
    4.  
    5. Position a hoist on the engine and support the engine.
    6.  
    7. Drain and recycle the engine oil.
    8.  
    9. Disconnect the tension rod bolts at the transverse link.
    10.  
    11. Separate the front stabilizer bar from the side member.
    12.  
    13. Remove the left and right engine mounting bolts.
    14.  
    15. Disconnect the lower steering joint.
    16.  
    17. Disconnect the power steering tube bracket at the left tension rod.
    18.  
    19. Remove the bolts and lower the front suspension member while supporting it with a jack. It is only necessary to lower the suspension member 2.36 in. (60mm).
    20.  
    21. Remove the oil pan retaining bolts.
    22.  
    23. Insert a seal cutter between the oil pan and the cylinder block.
    24.  
    25. Tapping the cutter with a hammer, slide it around the entire edge of the oil pan. Do not drive the seal cutter into the oil pump or rear seal retainer portion, or the aluminum mating surface will be deformed.
    26.  
    27. Lower the oil pan from the cylinder block and remove it from the front side of the engine.
    28.  

    To install:
    1. Carefully scrape the old gasket material away from the pan and cylinder block mounting surfaces, then apply a 0.138-0.177 in. (3.5-4.5mm) continuous bead of liquid gasket around the oil pan. Install the pan within 5 minutes or this step will have to be repeated.
    2.  
    3. Install the oil pan and tighten the mounting bolts. Start tightening the bolts from the center and work towards the ends.
    4.  
    5. Tighten the oil pan bolts to 57-61 inch lbs. (6.4-7.5 Nm) for 1993-94 vehicles or 12-14 ft. lbs. (16-19 Nm) for 1995-98 vehicles. Wait 30 minutes before refilling the crankcase to allow for the sealant to cure properly.
    6.  
    7. The remaining components are installed in the reverse order from which they were removed.
    8.  
    9. Fill the engine with the proper grade and viscosity of engine oil.
    10.  
    11. Connect the negative battery cable. Start the engine and check for leaks.
    12.  

     
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