Oil Pan

REMOVAL & INSTALLATION

3000GT

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Oil pan drain plug and drain the engine oil
   • Transfer case assembly, on vehicles equipped with AWD
   • Exhaust pipe, and on turbocharged engines, the return pipe for the turbocharger from the side of the oil pan
   • Oil pan mounting bolts
3. Separate and remove the engine oil pan.

   To install:

4. Thoroughly clean the oil pan, cylinder block bolts and bolt holes.
5. Apply a thin bead of sealer around the surface of the oil pan.
6. Assemble the oil pan to the cylinder block within 15 minutes after applying the sealant.
7. Install the oil pan mounting bolts and tighten to 48–72 inch lbs. (6–8 Nm).
8. Fill the engine with the proper amount of oil.
9. Connect the negative battery cable and check for leaks.

Diamante

3.0L ENGINES

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Oil pan drain plug and drain the engine oil
   • Left side crossmember. If equipped with 4WS, it will also be necessary to remove the right side crossmember.
   • Starter motor
   • Roll stopper stay bracket, from the rear transaxle stay bracket
   • Transaxle stay brackets
   • Bell housing lower cover
   • Oil pan mounting bolts
   • The engine oil pan

   To install:

3. Apply a 0.16 in. (4mm) continuous bead of sealer around the surface of the oil pan.

   NOTE: Assemble the oil pan to the cylinder block within 15 minutes after applying the sealant.

4. Install the oil pan mounting bolts. Following proper sequence, tighten mounting bolts to 48 inch lbs. (6 Nm).

   Fig. 1: Oil pan bolt tightening sequence and application of sealant to the pan — Diamante 3.0L (J- and H-) engines

5. Install or connect the following:
   • Lower bell housing cover and the starter motor
   • Transaxle stay brackets and connect the roll stopper bracket
   • Crossmember(s) and tighten the mounting bolts to 43–51 ft. lbs. (60–70 Nm)
6. Fill the engine with the proper amount of oil.
7. Connect the negative battery cable and check for leaks.

3.5L ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Drain the engine oil.
4. Remove the mounting bolts from the lower oil pan.
5. Place a block of wood against the side of the pan and tap the block with a hammer to break the seal and remove the lower pan.
6. Remove or disconnect the following:
   • Starter
   • Dipstick tube
   • Upper oil pan

   WARNING
   Do not pry or use seal breaker tool to remove the oil pan. Damage to the aluminum surface can result.

7. Screw a bolt into the threaded hole to force the oil pan from the engine block and remove the pan.
8. Remove the bolt used to remove the pan.

   Fig. 2: Install a bolt in the threaded hole to force the oil pan from the engine block — 3.5L engine

   To install:

9. Clean and degrease the sealing surfaces of the upper oil pan and engine block.
10. Apply a bead of silicone sealant along the mounting surface of the upper oil pan.

    Fig. 3: Apply sealant and tighten the bolts in the order shown — 3.5L engine, upper oil pan

11. Install or connect the following:
    • Upper oil pan. Tighten the bolts in sequence to 48 inch lbs. (6 Nm).
    • Dipstick tube using a new O-ring
    • Starter assembly
12. Clean and degrease the sealing surface of the lower oil pan.
13. Place a bead of sealant on the mounting surface of the lower oil pan. Install the lower pan. Tighten the bolts in sequence to 84–108 inch lbs. (10–12 Nm).

    Fig. 4: Apply sealant and tighten the bolts in the order shown — 3.5L engine, lower oil pan

14. Install the drain plug using a new washer. Tighten the drain plug to 29 ft. lbs. (39 Nm).
15. Lower the vehicle and fill the crankcase to the correct level.
16. Connect the negative battery cable.
17. Start the engine and check for leaks.

Eclipse

2.0L (4G63) ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Safely raise and support the vehicle.
4. Remove or disconnect the following:
   • Front exhaust pipe
   • Exhaust pipe and muffler assembly
5. Drain the engine oil.
6. Remove or disconnect the following:
   • Dipstick and tube
   • Transfer case assembly (AWD)
   • Bell housing cover
   • Oil return pipe from the oil pan
   • Oil pan mounting bolts
7. Tap between the oil pan and the engine block to break the seal and remove the oil pan.

   Fig. 5: Using the special tool MB998727 to remove the oil pan — Eclipse 2.0L (4G63) engine

   To install:

8. Clean the sealing surface on the oil pan and engine block. Apply a continuous bead of sealant to the oil pan.
9. Clean the oil pan mounting bolt holes in the oil seal case.
10. Install the oil pan. Torque the mounting bolts to 60 inch lbs. (6.9 Nm).
11. Use a new gasket and connect the oil return pipe to the oil pan.
12. Install or connect the following:
    • Bell housing cover
    • Transfer case assembly if equipped
    • Dipstick and tube assembly
    • Front exhaust pipe
    • Exhaust pipe and muffler
13. Lower the vehicle and fill the crankcase to the correct level.
14. Connect the negative battery cable.
15. Start the engine and check for leaks.

2.0L (420A) ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Front exhaust pipe
   • Dipstick and tube assembly
   • Front plate
   • Oil pan mounting bolts
   • Oil pan and gasket

   To install:

5. Apply sealant at the point where the engine block meets the oil pump.
6. Use a new gasket and install the oil pan. Torque the mounting bolts to 105 inch lbs. (12 Nm).
7. Install or connect the following:
   • Front plate
   • Front exhaust pipe
   • Dipstick and tube assembly
8. Refill the crankcase with oil to the proper level.
9. Connect the negative battery cable.
10. Start the engine and check for leaks.

2.4L (4G64) ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove the negative battery cable.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Engine dipstick and tube assembly
   • Front exhaust pipe
   • Bell housing inspection cover
   • Bolts attaching the oil pan to the cylinder block
5. Remove the oil pan assembly.

   To install:

6. Clean the sealing surface on the oil pan and engine block. Apply a continuous bead of sealant to the oil pan.
7. Install or connect the following:
   • Oil pan to the cylinder block and tighten the bolts to 60 inch lbs. (7 Nm)
   • Bell housing inspection cover. Torque the bolts to 84 inch lbs. (9 Nm).
   • Front exhaust pipe
   • Engine dipstick and tube assembly using a new O-ring
8. Refill the engine with oil. Connect the negative battery cable. Start the engine and check for leaks.

Galant

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Oil pan drain plug and drain the engine oil
   • Oil dipstick and tube assembly
   • HO2S sensor connector
   • Front exhaust pipe from the vehicle
   • Bell housing cover
   • Oil pan retainer bolts
3. Tap in between the engine block and the oil pan.

   NOTE: Do not use a pry tool when removing the oil pan. Damage to engine components may occur.

   To install:

4. Apply sealant around the gasket surfaces of the oil pan.
5. Install or connect the following:
   • Oil pan onto the cylinder block within 15 minutes after applying sealant. Tighten to 72 inch lbs. (8 Nm).
   • Oil drain plug and tighten to 29 ft. lbs. (39 Nm)
   • Bell housing cover. Tighten the mounting bolts to 84 inch lbs. (9 Nm).
   • Front exhaust pipe and tighten the bolts at the catalytic converter to 36 ft. lbs. (49 Nm). Tighten the nuts at the exhaust manifold to 32 ft. lbs. (44 Nm).
   • HO2S sensor connector
6. Fill the crankcase to the proper level.
7. Connect the negative battery cable. Start the engine and check for leaks.

Mirage

1.5L (4G15) ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Drain the engine oil.
4. Remove or disconnect the following:
   • Bell housing lower cover
   • Oil pan retainer bolts

   NOTE: Do not use a pry tool when removing the oil pan.

   To install:

5. Clean all gasket surfaces of the cylinder block and the oil pan.
6. Apply sealant to the gasket surfaces of the oil pan.
7. Install or connect the following:
   • Oil pan onto the cylinder block within 15 minutes after applying sealant. Tighten to 60 inch lbs. (7 Nm).
   • Bell housing cover
   • Oil drain plug with a new seal and tighten to 29 ft. lbs. (40 Nm)
8. Lower the vehicle and fill the crankcase to the proper level with clean engine oil.
9. Connect the negative battery cable. Start the engine and check for leaks.

1.8L (4G93) ENGINE

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Raise the vehicle and support safely.
4. Remove or disconnect the following:
   • Oil pan drain plug and drain the engine oil
   • Exhaust pipe from the engine manifold
   • Bell housing lower cover
   • Oil pan retainer bolts and remove the oil pan

   NOTE: Do not use a pry tool when removing the oil pan.

   To install:

5. Clean all gasket surfaces of the cylinder block and the oil pan.
6. Apply sealant around the gasket surfaces of the oil pan.
7. Install or connect the following:
   • Oil pan onto the cylinder block within 15 minutes after applying sealant. Tighten to 60 inch lbs. (5 Nm).
   • Bell housing cover
   • Exhaust pipe to the engine manifold with new gasket in place. Tighten the exhaust pipe to manifold flange nuts to 33 ft. lbs. (45 Nm). Install and tighten the support bolt to 18 ft. lbs. (25 Nm).
   • Oil drain plug and tighten to 29 ft. lbs. (40 Nm)
8. Fill the crankcase to the proper level.
9. Connect the negative battery cable. Start the engine and check for leaks.