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Home >> Nissan-Datsun >> 2004 >> Altima S, Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 3.5L) >> Oil Pan >> Removal and Installation >> Removal

Removal and Installation: Removal

WARNING: This page is about a different variant/trim than selected.
WARNING:
  • You should not remove the oil pan until the exhaust system and cooling system have completely cooled off.
  • When removing the front and rear engine mounting through bolts and nuts, lift the engine up slightly for safety. For engine slingers, refer to step  19 in REMOVAL.
CAUTION: When removing the upper oil pan from the engine, first remove the crankshaft position sensor (POS). Be careful not to damage sensor edges or signal plate teeth.
  1. Remove the front RH wheel and tire with power tool.
  2. Disconnect the battery negative terminal.
  3. Remove the oil dipstick.
  4. Drain the engine coolant. Refer to V6 .
  5. Remove the engine undercover using power tool.
  6. Remove the RH inner fender splash shield using power tool.
  7. Remove the A/C drive belt.
  8. Remove the front exhaust tube. Refer to REMOVAL AND INSTALLATION .
  9. Dismount the A/C compressor with piping attached, and reposition it out of the way securely with wire.
    CAUTION: Do not pull on or crimp the A/C lines and hoses.
  10. Disconnect the coolant lines from the engine oil cooler and plug them to prevent coolant loss.
  11. Remove the oil filter and engine oil cooler from the upper oil pan.
  12. Remove the oil pressure switch, and the crankshaft position sensor (POS) from the upper oil pan.
  13. Remove the front suspension member. See FRONT SUSPENSION MEMBER .
    CAUTION: Before disconnecting, support the front suspension member with a suitable power lift. Use the lift to lower the front suspension member to remove it.
    1. Disconnect the lower ball joints

      Refer to TRANSVERSE LINK & BALL JOINT .

    2. Disconnect the power steering line bracket.
    3. Disconnect the steering gear mounting bolts.

      Refer to REMOVAL AND INSTALLATION .

    4. Disconnect the upper sway bar links.

      Refer to STABILIZER BAR .

    5. Remove the LH and RH drive axles.

      Refer to REMOVAL AND INSTALLATION .

    6. Disconnect the front engine mounts electrical connectors, if equipped. Remove the front and rear engine mounts through bolts and nuts using power tool.
      WARNING: For additional safety, support the engine from above with a suitable hoist.
      CAUTION: For vehicles equipped with an automatic transaxle, the front and rear engine mounts are electrically controlled. Disconnect the engine mount electrical connector before removing the through bolt.
    7. Remove the front suspension member mounting nuts and lower the member out of the engine compartment.
  14. Disconnect the heated oxygen sensors and remove the two catalytic convertors from the exhaust manifolds using power tool.
  15. Remove the rear plate cover from the upper oil pan.
    Fig 1: Locating Rear Plate Cover
    G02110540Courtesy of NISSAN MOTOR CO., U.S.A.
  16. Remove the bottom oil pan. Loosen the bolts in the numerical sequence as shown with power tool.
    Fig 2: View Of Lower Oil Pan Loosening Sequence
    G02110541Courtesy of NISSAN MOTOR CO., U.S.A.
    1. Insert a tool between the lower oil pan and the upper oil pan.
      • Be careful not to damage the mating surface. 
      • Do not insert a screwdriver, this will damage the mating surfaces. 
    2. Slide the tool by tapping its side with a hammer to remove the lower oil pan from the upper oil pan.
    Fig 3: View Of Seal Cutter
    G02110542Courtesy of NISSAN MOTOR CO., U.S.A.
  17. Remove the four engine-to-transaxle bolts.
    Fig 4: Removing 4 Engine-To-Transaxle Bolts
    G02110543Courtesy of NISSAN MOTOR CO., U.S.A.
  18. Remove the upper oil pan.
    1. Loosen the bolts in the numerical order as shown, using power tool.
      Fig 5: View Of Upper Oil Pan Loosening Sequence
      G02110544Courtesy of NISSAN MOTOR CO., U.S.A.
    2. Insert an appropriate size tool into the notch of the upper oil pan as shown (1).
    3. Pry off the upper oil pan by moving the tool up and down as shown (2).
    Fig 6: Removing Upper Oil Pan With Tool
    G02110545Courtesy of NISSAN MOTOR CO., U.S.A.
  19. Remove the O-ring seals from the bottom of the cylinder block and oil pump housing, use new O-rings for installation.
    Fig 7: Removing O-Ring Seals
    G02110546Courtesy of NISSAN MOTOR CO., U.S.A.
  20. Remove front cover gasket and rear oil seal retainer gasket.
    Fig 8: Removing Front Cover Gasket & Rear Oil Seal Retainer Gasket
    G02110547Courtesy of NISSAN MOTOR CO., U.S.A.
  21. If re-installing the original oil pan, remove the old sealant from the mating surfaces using a scraper.
    • Also remove the old sealant from mating surface of the cylinder block. 
    • Remove the old sealant from the bolt holes and threads. 
    CAUTION: Do not scratch or damage the mating surfaces when cleaning off the old sealant.
    Fig 9: View Of Cleaning Off Old Sealant
    G02110548Courtesy of NISSAN MOTOR CO., U.S.A.
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