Lexus GS, SC 1998-06

Oil Pan

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Removal & Installation



1MZ-FE Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable from the battery.
     
    Right front wheel
     
    Fender apron seal
     
    Engine undercover
     
    Front exhaust pipe
     
    Front exhaust pipe bracket from the No. 1 oil pan
     
    Flywheel housing undercover
     
    10 bolts and 2 nuts to the No. 2 oil pan
     

  6.  
  7. Insert a blade between the No. 1 and No. 2 oil pans. Tap the tool sideways to break the seal and remove the pan. Clean the surfaces of the oil pans.

    Oil strainer and gasket from the engine by removing the 3 nuts.
     
    No. 1 oil pan as follows. Make a note of the position of the each bolt. When replacing the bolts into the oil pan, place each bolt in the position from which it was removed.
     
    Baffle plate from the No. 1 oil pan
     



    Click image to see an enlarged view

    Fig. Use the special tool to break the seal and remove the oil pan-3.0L (1MZ-FE) engine

  8.  

To install:



Click image to see an enlarged view

Fig. Apply sealant as shown to the No. 1 (upper) oil pan-3.0L (1MZ-FE) engine

  1. Clean all mating surfaces of the oil pans. Using a non-residue solvent, clean both sealing surfaces to the oil pan.
  2.  
  3. Install or connect the following:

    Baffle plate to the No. 1 oil pan and tighten to 69 inch lbs. (8 Nm)
     
    No. 1 oil pan. Apply RTV sealant to the oil pan and engine block. Uniformly tighten the bolts and nuts in several passes to: 10mm: 69 inch lbs. (8 Nm); 12mm: 14 ft. lbs. (20 Nm); 14mm: 27 ft. lbs. (37 Nm)
     
    Flywheel housing undercover with the 2 bolts. Tighten the bolts to 69 inch lbs. (8 Nm).
     
    Oil strainer with the 3 nuts. Tighten the nuts to 69 inch lbs. (8 Nm).
     
    No. 2 oil pan. Apply RTV sealant to the oil pan and engine block. Uniformly tighten the bolts and nuts in several passes, to 69 inch lbs. (8 Nm).
     
    Flywheel housing undercover
     
    Front exhaust pipe bracket to the No. 1 oil pan. Tighten the bolts to 15 ft. lbs. (21 Nm).
     
    Front exhaust pipe. 4 pipe-to-pipe nuts: 46 ft. lbs. (62 Nm); front exhaust pipe-to-the center exhaust pipe bolts and nuts: 41 ft. lbs. (56 Nm); bracket bolts: 14 ft. lbs. (19 Nm); support stay bolts: 22 ft. lbs. (30 Nm).
     
    Engine undercover
     
    Right fender apron seal
     
    The right front wheel and lower the vehicle
     
    Engine with oil
     

  4.  

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Negative battery cable from the battery.
     
    Right front wheel
     
    Fender apron seal
     
    Engine undercover
     
    Front exhaust pipe
     
    Front exhaust pipe bracket from the No. 1 oil pan
     
    Flywheel housing undercover
     
    10 bolts and 2 nuts to the No. 2 oil pan
     

  6.  
  7. Insert a blade between the No. 1 and No. 2 oil pans. Tap the tool sideways to break the seal and remove the pan. Clean the surfaces of the oil pans.

    Click image to see an enlarged view

    Fig. Use the special tool to break the seal and remove the oil pan-3.0L (1MZ-FE) engine



    Oil strainer and gasket from the engine by removing the 3 nuts.
     
    No. 1 oil pan as follows. Make a note of the position of the each bolt. When replacing the bolts into the oil pan, place each bolt in the position from which it was removed.
     
    Baffle plate from the No. 1 oil pan.
     

  8.  

To install:

Click image to see an enlarged view

Fig. Apply sealant as shown to the No. 1 (upper) oil pan-3.0L (1MZ-FE) engine

  1. Clean all mating surfaces of the oil pans. Using a non-residue solvent, clean both sealing surfaces to the oil pan.
  2.  
  3. Install or connect the following:

    Baffle plate to the No. 1 oil pan and tighten to 69 inch lbs. (8 Nm).
     
    No. 1 oil pan. Apply RTV sealant to the oil pan and engine block. Uniformly tighten the bolts and nuts in several passes to: 10mm: 69 inch lbs. (8 Nm); 12mm: 14 ft. lbs. (20 Nm); 14mm: 27 ft. lbs. (37 Nm)
     
    Flywheel housing undercover with the 2 bolts. Tighten the bolts to 69 inch lbs. (8 Nm).
     
    Oil strainer with the 3 nuts. Tighten the nuts to 69 inch lbs. (8 Nm).
     
    No. 2 oil pan. Apply RTV sealant to the oil pan and engine block. Uniformly tighten the bolts and nuts in several passes, to 69 inch lbs. (8 Nm).
     
    Flywheel housing undercover
     
    Front exhaust pipe bracket to the No. 1 oil pan. Tighten the bolts to 15 ft. lbs. (21 Nm).
     
    Front exhaust pipe. 4 pipe-to-pipe nuts: 46 ft. lbs. (62 Nm); front exhaust pipe-to-the center exhaust pipe bolts and nuts: 41 ft. lbs. (56 Nm); bracket bolts: 14 ft. lbs. (19 Nm); support stay bolts: 22 ft. lbs. (30 Nm).
     
    Engine undercover
     
    Right fender apron seal
     
    The right front wheel and lower the vehicle
     
    Engine with oil
     

  4.  

1UZ-FE & 3UZ-FE Engines

NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine and transmission must be removed as a unit, then separated. It may be possible to remove the No. 2 oil pan from the vehicle while the engine is still in the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Engine/transmission assembly
     
    Oil dipstick and guide
     
    12 bolts and 2 nuts. Use a gasket-cutting tool to separate the No. 2 (lower) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    6 bolts and 2 nuts; remove the baffle plate
     
    16 bolts, then carefully pry off the No. 1 oil pan
     

  4.  


NOTE
There are slots for inserting the prybar.

To install:

  1. Install or connect the following:

    No. 1 pan. Apply a18
     
    Baffle plate. Torque bolts and nuts to 69 inch lbs. (8 Nm).
     
    RTV sealant to the pan mating surface
     
    No. 2 oil pan. Torque bolts to 69 inch lbs. (8 Nm)
     
    Dipstick and guide
     
    Engine/transaxle assembly
     
    All fluids
     

  2.  


NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine and transmission must be removed as a unit, then separated. It may be possible to remove the No. 2 oil pan from the vehicle while the engine is still in the vehicle.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:
    NOTE
    There are slots for inserting the prybar.



    Engine/transmission assembly
     
    Oil dipstick and guide
     
    12 bolts and 2 nuts. Use a gasket-cutting tool to separate the No. 2 (lower) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    6 bolts and 2 nuts; remove the baffle plate
     
    16 bolts, then carefully pry off the No. 1 oil pan
     

  4.  

To install:

  1. Install or connect the following:

    No. 1 pan. Apply a 1 / 8 inch (3-4mm) bead on RTV sealant to the pan mating surface. Bolts: 12mm: 69 inch lbs. (8mm); 14mm: 20 ft. lbs. (28 Nm)

    Click image to see an enlarged view

    Fig. SC400 and GS400 oil pan bolt locations-(A) 0.78 in (20mm), (B) 1.38 in. (35mm), (C) 0.78 in (20mm) with 12mm bolt heads

     
    Baffle plate. Bolts and nuts: 69 inch lbs. (8 Nm).
     
    RTV sealant to the pan mating surface
     
    No. 2 oil pan. Bolts: 69 inch lbs. (8 Nm)
     
    Dipstick and guide
     
    Engine/transaxle assembly
     
    All fluids
     

  2.  


NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine and transmission must be removed as a unit, then separated. It may be possible to remove the No. 2 oil pan from the vehicle while the engine is still in the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:
    NOTE
    There are slots for inserting the prybar.



    Engine/transmission assembly
     
    Oil dipstick and guide
     
    12 bolts and 2 nuts. Use a gasket-cutting tool to separate the No. 2 (lower) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    6 bolts and 2 nuts; remove the baffle plate
     
    16 bolts, then carefully pry off the No. 1 oil pan
     

  4.  

To install:

  1. Install or connect the following:

    No. 1 pan. Apply a 1 / 8 inch (3-4mm) bead on RTV sealant to the pan mating surface. Bolts: 12mm: 66 inch lbs. (8mm); 14mm: 21 ft. lbs. (28 Nm)
     
    Baffle plate. Torque bolts and nuts to 66 inch lbs. (8 Nm).
     
    RTV sealant to the pan mating surface
     
    No. 2 oil pan. Torque bolts to 66 inch lbs. (8 Nm)
     
    Dipstick and guide
     
    Engine/transaxle assembly
     
    All fluids
     

  2.  

2JZ-GE Engine

NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine/transmission assembly must be removed. See ENGINE ASSEMBLY section. The manufacturer does not provide any on vehicle information for the No. 2 oil pan removal and installation. If only the No. 2 oil pan is being serviced, the engine/transmission assembly can remain in the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Engine/transmission assembly
     
    Timing belt
     
    Idler pulley
     
    Crankshaft timing pulley
     
    Oil dipstick and guide
     
    Oil sensor lead
     
    4 attaching bolts and lift off the oil level sensor. Be careful not to drop this sensor.
     
    14 bolts (16 bolts for GS 300) and 2 nuts and pry off the lower (No. 2) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    Bolt and 2 nuts and drop down the oil strainer and gasket
     
    5 bolts and 2 nuts and drop down the baffle plate
     
    22 bolts and the carefully pry off the upper (No. 1) oil pan
     
    O-ring from the cylinder block
     

  4.  

To install:

  1. Install or connect the following:

    New O-ring in the block and scrape off any old sealant
     
    A18
     
    Upper pan. 12mm bolts: 15 ft. lbs. (21 Nm); 14mm bolts to 29 ft. lbs. (39 Nm)
     


    Click image to see an enlarged view

    Fig. Lower oil pan sealant application-3.0L (2JZ-GE) engine



    Click image to see an enlarged view

    Fig. Upper oil pan sealant application-3.0L (2JZ-GE) engine

    Baffle plate and oil strainer. Tighten them both to 78 inch lbs. (9 Nm).
     
    Lower pan in the same manner as the upper pan and tighten the bolts to 78 inch lbs. (9 Nm)
     
    Oil level sensor and tighten it to 48 inch lbs. (5 Nm)
     
    Oil dipstick and guide
     
    Timing pulleys and belt
     
    Transmission to the engine
     
    Engine and transmission
     
    All fluids
     

  2.  


NOTE
The No. 1 oil pan can not be removed with the engine in the vehicle. The engine/transmission assembly must be removed. The manufacturer does not provide any on vehicle information for the No. 2 oil pan removal and installation. If only the No. 2 oil pan is being serviced, the engine/transmission assembly can remain in the vehicle.

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Engine/transmission assembly
     
    Timing belt
     
    Idler pulley
     
    Crankshaft timing pulley
     
    Oil dipstick and guide
     
    Oil sensor lead
     
    4 attaching bolts and lift off the oil level sensor. Be careful not to drop this sensor.
     
    14 bolts (16 bolts for GS300) and 2 nuts and pry off the lower (No. 2) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    Bolt and 2 nuts and drop down the oil strainer and gasket.
     
    5 bolts and 2 nuts and drop down the baffle plate.
     
    22 bolts and the carefully pry off the upper (No. 1) oil pan.
     
    O-ring from the cylinder block.
     

  4.  

To install:

  1. Install or connect the following:

    New O-ring in the block and scrape off any old sealant
     
    A 1 / 8 inch (3-4mm) bead of RTV sealant to the pan mating surface
     
    Upper pan. 12mm bolts: 15 ft. lbs. (21 Nm); 14mm bolts to 29 ft. lbs. (39 Nm)

    Click image to see an enlarged view

    Fig. Lower oil pan sealant application-3.0L (2JZ-GE) engine



    Click image to see an enlarged view

    Fig. Upper oil pan sealant application-3.0L (2JZ-GE) engine

     
    Baffle plate and oil strainer. Tighten them both to 78 inch lbs. (9 Nm).
     
    Lower pan in the same manner as the upper pan and tighten the bolts to 78 inch lbs. (9 Nm).
     
    Oil level sensor and tighten it to 48 inch lbs. (5 Nm).
     
    Oil dipstick and guide
     
    Timing pulleys and belt
     
    Transmission to the engine
     
    Engine and transmission
     
    All fluids
     

  2.  


NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine/transmission assembly must be removed. See ENGINE ASSEMBLY section. The manufacturer does not provide any on vehicle information for the No. 2 oil pan removal and installation. If only the No. 2 oil pan is being serviced, the engine/transmission assembly can remain in the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Engine/transmission assembly
     
    Timing belt
     
    Idler pulley
     
    Crankshaft timing pulley
     
    Oil dipstick and guide
     
    Oil sensor lead
     
    4 attaching bolts and lift off the oil level sensor. Be careful not to drop this sensor.
     
    14 bolts (16 bolts for GS 300) and 2 nuts and pry off the lower (No. 2) oil pan. Be careful not to damage the No. 1 pan while performing this procedure.
     
    Bolt and 2 nuts and drop down the oil strainer and gasket
     
    5 bolts and 2 nuts and drop down the baffle plate
     
    22 bolts and the carefully pry off the upper (No. 1) oil pan
     
    O-ring from the cylinder block
     

  4.  

To install:

  1. Install or connect the following:

    New O-ring in the block and scrape off any old sealant
     
    A 1 / 8 inch (3-4mm) bead of RTV sealant to the pan mating surface
     
    Upper pan. 12mm bolts: 15 ft. lbs. (21 Nm); 14mm bolts to 29 ft. lbs. (39 Nm)

    Click image to see an enlarged view

    Fig. Lower oil pan sealant application-3.0L (2JZ-GE) engine



    Click image to see an enlarged view

    Fig. Upper oil pan sealant application-3.0L (2JZ-GE) engine

     
    Baffle plate and oil strainer. Tighten them both to 78 inch lbs. (9 Nm).
     
    Lower pan in the same manner as the upper pan and tighten the bolts to 78 inch lbs. (9 Nm)
     
    Oil level sensor and tighten it to 48 inch lbs. (5 Nm)
     
    Oil dipstick and guide
     
    Timing pulleys and belt
     
    Transmission to the engine
     
    Engine and transmission
     
    All fluids
     

  2.  

3gr-Fse Engine

NOTE
The No. 1 oil pan cannot be removed with the engine in the vehicle. The engine and transmission must be removed as a unit, then separated. See ENGINE ASSEMBLY section. It may be possible to remove the No. 2 oil pan from the vehicle while the engine is still in the vehicle.

  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the engine oil.

    Click image to see an enlarged view

    Fig. Exploded view of the oil pan and related components (2WD)-2.5L (4GR-FSE), 3.0L (3GR-FSE) and 3.5L (2GR-FSE) Engines



    Click image to see an enlarged view

    Fig. Exploded view of the oil pan and related components (AWD)-2.5L (4GR-FSE) and 3.0L (3GR-FSE) Engines

  4.  
  5. Remove or disconnect the following:

    Negative battery cable from the battery
     
    Engine/transmission assembly
     
    Oil filter element
     
    Oil filter bracket (AWD)
     

  6.  
  7. Remove the No. 2 oil pan sub-assembly as follows:
    1. Remove the 15 bolts and 2 nuts (2WD).
    2.  
    3. Remove the 14 bolts and 2 nuts (AWD).
    4.  
    5. Insert the blade of a prying tool between the oil pans. Cut through the applied sealer and remove the No. 2 oil pan sub-assembly.
      NOTE
      Be careful not to damage the contact surfaces of the oil pans.

    6.  

  8.  
  9. Remove the oil with strainer pipe sub-assembly (AWD) as follows:
    1. Remove the 3 mounting nuts.
    2.  
    3. Remove the oil with strainer pipe and gasket.
    4.  

  10.  
  11. Remove the oil pan sub-assembly as follows:
    1. Remove the 16 bolts and 2 nuts.
      NOTE
      Be sure to clean the bolts and stud bolts and check the threads for cracks or other damage.

    2.  
    3. Remove the oil pan by prying between the oil pan and cylinder block with a screwdriver.
      WARNING
      Be careful not to damage the contact surfaces of the cylinder block and oil pan.

    4.  
    5. Remove the 2 O-rings.
    6.  

  12.  

To install:

  1. Install the oil pan sub-assembly as follows:
    1. When replacing a stud bolt, install it by using an E6 "torx" socket wrench. Torque the stud bolt to 35 inch lbs. (4 Nm).
    2.  
    3. Apply seal packing in a continuous line of 0.118-0.156 inches (3.0-4.0mm) in diameter.
      NOTE
      Remove any oil from the contact surface. Install the oil pan within 3 minutes after applying seal packing. Do not start the engine for at least 2 hours after installing.

    4.  
    5. Install the oil pan with the 16 bolts and 2 nuts. Torque the A bolts to 7 ft. lbs. (10 Nm). Torque the remaining bolts to 15 ft. lbs. (21 Nm).

      Click image to see an enlarged view

      Fig. Location of the A bolts on the oil pan assembly-2.5L (4GR-FSE), 3.0L (3GR-FSE) and 3.5L (2GR-FSE) Engines

    6.  

  2.  
  3. Install the oil with strainer pipe sub-assembly (AWD) as follows:
    1. Install a new gasket.
    2.  
    3. Install the oil with strainer pipe with the 3 nuts. Torque to 7 ft. lbs. (10 Nm).
    4.  

  4.  
  5. Install the No. 2 oil pan sub-assembly as follows:
    1. Apply seal packing in a continuous line of 0.118-0.156 inches (3.0-4.0mm) in diameter.
      NOTE
      Remove any oil from the contact surface. Install the oil pan No. 2 within 3 minutes after applying seal packing. Do not start the engine for at least 2 hours after installing.

    2.  
    3. Install the oil pan with the 15 bolts and 2 nuts (2WD). Torque the bolts to 7 ft. lbs. (10 Nm).
    4.  
    5. Install the oil pan with the 14 bolts and 2 nuts (AWD). Torque the bolts to 7 ft. lbs. (10 Nm).
    6.  

  6.  
  7. Install or connect the following:

    New gasket and oil filter bracket (AWD). Torque the bolt and 2 nuts to 15 ft. lbs. (21 Nm).
     
    Oil filter element
     
    Engine/transmission assembly
     
    Negative battery cable from the battery
     
    Engine with oil
     

  8.  

 
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