BMW Coupes and Sedans 1970-1988 Repair Guide

Oil Pan

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REMOVAL & INSTALLATION



1600, 2000 and 2002 Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Remove the front stabilizer bar, if equipped.
  2.  
  3. Remove the oil pan retaining bolts and loosen the pan from the engine block.
  4.  
  5. Disconnect the left and right engine supports.
  6.  
  7. Lower the vehicle and attach a lifting sling and raise the engine slightly.
  8.  
  9. Rotate the crankshaft so the the No. 4 piston is at TDC.
  10.  
  11. Remove the oil pan toward the front of the vehicle.
  12.  

To install:
  1. To install the oil pan, use a new gasket. Put sealer on the joints formed where the end cover and timing cover butt up against the block.
  2.  
  3. Slide the oil pan carefully into position and install the retaining bolts. Tighten the bolts to 7 ft. lbs. (9 Nm).
  4.  
  5. Lower the engine back into position.
  6.  
  7. Connect the left and right engine mounts. Install the front stabilizer bar, if removed.
  8.  
  9. Fill the crankcase to the correct level with clean engine oil.
  10.  

2500, 2800, Bavaria, 3000, 3.0, 528i and 530i Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Remove the front lower apron (3.0 models) and remove the stabilizer bar.
  2.  
  3. Loosen the alternator (remove the alternator on 528i and 530i models) and remove the power steering pump, but do not disconnect the hoses. Support the power steering pump with a piece of wire.
  4.  
  5. Remove the lower power steering bracket bolt and loosen the remaining bolts (remove the remaining bolts on 528i and 530i models) enough to remove the oil pan retaining bolts.
  6.  
  7. Loosen the engine support bracket.
  8.  
  9. Remove the oil pan bolts and loosen the oil pan from the engine block.
  10.  
  11. Rotate the crankshaft until the No. 6 crankpin is above the bottom of the engine block.
  12.  
  13. Lower the front of the oil pan, turn the rear of the pan towards the support bracket and remove the pan.
  14.  

To install:
  1. To install the oil pan, use new gaskets. Put the sealer on the joints formed where the end cover and timing cover butt up against the block.
  2.  
  3. Move the oil pan carefully into position and install the retaining bolts. Tighten to bolts to 7 ft. lbs. (9 Nm).
  4.  
  5. Reinstall the alternator and power steering pump
  6.  
  7. Connect the left and right engine mounts. Install the front stabilizer bar, and the install the front lower apron.
  8.  
  9. Fill the crankcase to the correct level with clean engine oil.
  10.  

318i Models
  1. Remove the dipstick. Remove the lower pan by draining the oil, removing the pan bolts, and removing the lower pan.
  2.  


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.

  1. Remove the oil pump.
  2.  
  3. Unscrew the ground strap, located at the right rear of the upper pan.
  4.  
  5. Remove the bottom 3 flywheel housing bolts, and 2 reinforcement plate bolts, and remove the reinforcement plate.
  6.  
  7. Remove upper pan bolts, and remove the upper pan.
  8.  
  9. Clean all 4 sealing surfaces. Replace both gaskets. Coat the mating surfaces on the timing case and end covers with sealer.
  10.  
  11. Install in reverse order, tightening the pan bolts to 7-8 ft. lbs. (9 Nm).
  12.  

320i Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Loosen the steering gear bolts and pull the steering box off the front axle carrier.
  2.  
  3. Remove the oil pan bolts and separate the pan from the engine block.
  4.  
  5. Swing the oil pan downward while rotating the crankshaft to allow the pan to clear the crankpin and remove the pan toward the front.
  6.  
  7. Reverse the procedure to install the oil pan, using new gaskets.
  8.  
  9. Tighten the bolts to 7 ft. lbs. (9 Nm).
  10.  

325, 325e, 325i, 325iS, 325iX and 528e Models

See Figures 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11

  1. Raise the vehicle and support it. Drain the engine oil.
  2.  


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.

  1. Remove the front lower splash guard. This may not be necessary for access on 1988 models.
  2.  



Click image to see an enlarged view

Fig. Fig. 1: Remove the ground strap attached to the front left part of the oil pan



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Fig. Fig. 2: Unplug the oil sender harness



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Fig. Fig. 3: Remove the bolts from the flywheel cover over the oil pan



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Fig. Fig. 4: With the flywheel cover removed, inspect the gasket and replace if needed



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Fig. Fig. 5: Remove the bolts from the front of the oil pan



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Fig. Fig. 6: Remove the bolts from the side of the oil pan

  1. Unfasten the electrical terminal from the oil sending unit.
  2.  
  3. On 1987 and earlier models, skip to Step 5. On 1988 models, remove the power steering gear from the front axle carrier.
  4.  
  5. Remove the flywheel cover.
  6.  
  7. Remove the oil pan bolts and lower the oil pan. Remove the oil pump bolts and take out the oil pump and oil pan.
  8.  



Click image to see an enlarged view

Fig. Fig. 7: Carefully pry the oil pan off



Click image to see an enlarged view

Fig. Fig. 8: Lower the oil pan until it catches the oil pump



Click image to see an enlarged view

Fig. Fig. 9: Remove the bolts securing the oil pump to the engine block



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Fig. Fig. 10: Lower the oil pan and pump away from the engine block



Click image to see an enlarged view

Fig. Fig. 11: Clean all gasket material from the oil pan and pan mating surfaces

To install:
  1. Installation is the reverse of removal. Follow these installation notes:
    1. Clean the gasket surfaces and use a new gasket on the oil pan.
    2.  
    3. Coat the joints on the ends of the front engine cover with a universal sealing compound.
    4.  
    5. Tighten the bolts to 7 ft. lbs. (9 Nm).
    6.  
    7. Install the sending unit wire and the engine oil. If the power steering gear was removed, make sure to refill and bleed this system.
    8.  

  2.  

M3 Models
  1. Remove the dipstick. Remove the splash guard from underneath the engine.
  2.  
  3. Remove the drain plug and drain the oil. Unscrew all the bolts for the lower oil pan and remove it.
  4.  


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.

  1. Remove the oil pan.
  2.  
  3. Remove the lower flywheel housing cover by removing the 3 bolts at the bottom of the flywheel housing and the 2 bolts in the cover just ahead of the flywheel housing.
  4.  
  5. Disconnect the oil pressure sending unit plug. Unbolt the oil pan bracket. Disconnect the ground lead. Loosen its clamp and unfasten the crankcase ventilation hose.
  6.  
  7. Remove the oil pan bolts and remove the upper oil pan.
  8.  

To install:
  1. Clean all sealing surfaces. Supply a new gasket and the coat the joints where the timing case cover and block meet with a brush-on sealant. Install the pan and tighten the bolts evenly to 7 ft. lbs. (9 Nm).
  2.  
  3. Reverse the remaining removal procedures to install, cleaning all sealing surfaces and using a new gasket on the lower pan, also. Tighten the lower pan bolts, also, to 7 ft. lbs. (9 Nm).
  4.  
  5. Install the oil pan drain plug, tightening to 24 ft. lbs. (31 Nm). Refill the oil pan with the required amount of approved oil. Start the engine and check for leaks.
  6.  

524td Models
  1. Drain the oil out of the oil pan. Unfasten the electrical connector for the wire running to the base of the oil pan.
  2.  


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.

  1. Disconnect the turbocharger drain hose running into the side of the oil pan.
  2.  
  3. Remove the flywheel/torque converter cover by removing the 4 bolts from underneath.
  4.  
  5. Remove the oil pan bolts and lower it until it is possible to gain access to the oil pump mounting bolts. Remove those bolts (one on one side of the crankshaft and 2 on the other side) then lower the pan with the pump inside it.
  6.  

To install:
  1. Clean all the sealing surfaces. Coat the joints between the block and timing case cover and end cover with a sealing compound. Use a new pan gasket.
  2.  
  3. Guide the oil pump driveshaft into the upper bearing in one side of the block. Guide the pan with the pump inside it upward until it is possible to bolt the oil pump into position. Then, bolt the pan into position. Complete the procedure in reverse order.
  4.  
  5. Tighten the bolts to 7 ft. lbs. (9 Nm).
  6.  

530i Models
  1. Raise the vehicle and support it. Drain the engine oil.
  2.  


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.

  1. Remove the front lower splash guard.
  2.  
  3. Unfasten the electrical terminal from the oil sending unit.
  4.  
  5. Remove the flywheel cover.
  6.  
  7. Remove the oil pan bolts and lower the oil pan. Remove the oil pump bolts and take out the oil pump and oil pan.
  8.  
  9. Installation is the reverse of removal:
    1. Clean the gasket surfaces and use a new gasket on the oil pan.
    2.  
    3. Tighten the pan bolts to 7 ft. lbs. (9 Nm).
    4.  
    5. Coat the joints on the ends of the front engine cover with a universal sealing compound.
    6.  
    7. Tighten the bolts to 7 ft. lbs. (9 Nm).
    8.  
    9. Install the sending unit wire and the engine oil.
    10.  

  10.  

1982 533i and 633CSi Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Remove the front stabilizer bar.
  2.  
  3. Disconnect the wire terminal at the oil level switch.
  4.  
  5. Unfasten the power steering pump, but do not disconnect the hoses. Loosen all the power steering bracket bolts, and remove the bottom bolt.
  6.  
  7. Remove the engine oil pan bolts, separate the oil pan from the engine block and lower the front of the pan.
  8.  
  9. Rotate the crankshaft until the No. 6 crankpin is above the bottom of the engine block.
  10.  
  11. Lift the engine slightly at the clutch housing while removing the pan to the right side.
  12.  

To install:
  1. To install the oil pan, use new gaskets. Put the sealer on the joints formed where the end cover and timing cover butt up against the block.
  2.  
  3. Move the oil pan carefully into position and install the retaining bolts. Tighten the bolts to 7 ft. lbs. (9 Nm).
  4.  
  5. Reinstall the alternator and power steering pump
  6.  
  7. Connect the left and right engine mounts. Install the front stabilizer bar, and the install the front lower apron.
  8.  
  9. Fill the crankcase to the correct level with clean engine oil.
  10.  

1983-84 533i and 633CSi; 535i, 635CSi, M5 and M6 Models
  1. Disconnect the negative battery cable. Unfasten the electrical connector and separate the leads from the air cleaner/airflow sensor. Loosen the hose clamp and disconnect the air intake hose. Remove the mounting nut and remove the air cleaner and the airflow sensor as a unit. Remove the fan shroud.
  2.  
  3. Drain the engine oil.
  4.  


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.

  1. Loosen the belt tensioner and remove the alternator drive belt. Loosen the upper front mounting bolt for the alternator and the 2 bolts on the side of the block that mount to the rear. Remove the lower front mounting bolt. Then, swing the alternator to the side.
  2.  
  3. Loosen the power steering pump mounts and remove the drive belt. Then, remove the mounting bolts and remove the pump and pump mounting bracket. Make sure to retain spacers. If the car has air conditioning, remove the nuts and bolts that fasten the compressor to the hinge type mounting bracket. Make sure the compressor is suspended so there is no tension on the hoses. Unbolt the hinge type mounting bracket and remove it.
  4.  
  5. Remove the brace plate located under the oil pan. Remove those oil pan bolts that can be reached.
  6.  
  7. Remove the engine ground strap. Remove the engine mount through-bolts. Attach a lifting sling to the hooks on top of the engine. Lift the engine slightly for clearance.
  8.  
  9. Shift the power steering pump out of the way and support it so no tension will be placed on the hoses.
  10.  
  11. Remove the remaining oil pan mounting bolts. Turn the crankshaft so the rods for cylinders 5 and 6 are as high as possible. Then, remove the pan.
  12.  

To install:
  1. Clean all sealing surfaces and supply a new gasket. Apply a liquid sealer to the joints between the block and the timing cover on the front and the rear main seal cover at the rear.
  2.  
  3. Install the oil pan in reverse order. Tighten the pan bolts to 6.5-7.5 ft. lbs. (8-10 Nm). Make sure to refill the pan with the required amount of the correct oil. Mount all accessories securely and adjust the drive belts.
  4.  

630CSi Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Remove the front stabilizer bar.
  2.  
  3. Unfasten the wire terminal at he oil level switch.
  4.  
  5. Disconnect the power steering pump, but do not disconnect the hoses. Loosen all the power steering bracket bolts, and remove the bottom bolt.
  6.  
  7. Remove the engine oil pan bolts, separate the oil pan from the engine block and lower the front of the pan.
  8.  
  9. Rotate the crankshaft until the No. 6 crankpin is above the bottom of the engine block.
  10.  
  11. Lift the engine slightly at the clutch housing while removing the pan to the right side.
  12.  

To install:
  1. To install the oil pan, use new gaskets. Put sealer on the joints where the end cover and timing cover butt up against the block.
  2.  
  3. Move the oil pan carefully into position and install the retaining bolts. Tighten the bolts to 7 ft. lbs. (9 Nm).
  4.  
  5. Reinstall the alternator and power steering pump
  6.  
  7. Connect the left and right engine mounts. Install the front stabilizer bar, and the install the front lower apron.
  8.  
  9. Fill the crankcase to the correct level with clean engine oil.
  10.  

1982 733i Models
  1. Raise and support the vehicle. Drain the engine oil.
  2.  


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.

  1. Remove the power steering pump, but do not disconnect the hoses.
  2.  
  3. Remove the lower power steering bracket bolt. Loosen the upper bracket bolts to move the bracket away from the oil pan.
  4.  
  5. Unfasten the oil level switch wire terminal.
  6.  
  7. Remove the oil pan bolts and separate the oil pan from the engine block.
  8.  
  9. Disconnect the left and right engine mounts.
  10.  
  11. Remove the engine vibration damper.
  12.  
  13. Lower the vehicle and remove the fan housing from the radiator.
  14.  
  15. Attach a lifting sling and raise the engine until the oil pan can be removed.
  16.  

To install:
  1. To install the oil pan, use new gaskets. Put the sealer on the joints formed where the end cover and timing cover butt up against the block.
  2.  
  3. Move the oil pan carefully into position and install the retaining bolts. Tighten the bolts to 7 ft. lbs. (9 Nm).
  4.  
  5. Reinstall the alternator and power steering pump.
  6.  
  7. Connect the left and right engine mounts. Install the front stabilizer bar, and the install the front lower apron.
  8.  
  9. Fill the crankcase to the correct level with clean engine oil.
  10.  

1983-86 733i Models
  1. Remove the alternator drive belt, remove the alternator mounting bolts and move it aside.
  2.  
  3. Loosen the adjusting and mounting bolts and remove the power steering pump belt. Remove the power steering pump hinge bolt and nut. Remove the 2 bolts shown, keeping any shims that may have been used in assembly together with the bolt they were on.
  4.  


CAUTION
When draining coolant, keep in mind that cats and dogs are attracted to ethylene glycol antifreeze, and could drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or several years old.

  1. Drain coolant out of the block. Drain the oil pan. Remove the plug from the block and drain the engine of coolant.
  2.  


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.

  1. Remove the 2 attachments fastening the stabilizer bar to the body.
  2.  
  3. Remove the 2 bolts and nuts shown and move this bracket away from the engine.
  4.  
  5. Remove the bolts and remove the clutch housing cover. Remove all the oil pan bolts that can be reached.
  6.  
  7. Disconnect the oil level sending unit wire. Then, unfasten both engine mounts by removing the nuts from the ends of the bolts.
  8.  
  9. Unfasten the radiator hoses that's near one of the lifting hooks, and securely connect a lifting sling to the engine. Raise the engine.
  10.  
  11. Swing out and tie down the power steering bracket. Then, unscrew the remaining oil pan bolts.
  12.  
  13. Pull the oil pan down. Turn the crankshaft so the rods for cylinders 5 and 6 are in the highest position, pull the stabilizer bar away, and then remove the pan.
  14.  

To install:
  1. Install in reverse order, paying attention to these points:
    1. Clean all gasket surfaces thoroughly. Use a new gasket and coat all mating surfaces on the timing cover and clutch housing cover with a liquid sealer.
    2.  
    3. Tighten the oil pan bolts to 7 ft. lbs. (9 Nm).
    4.  
    5. Tighten the stabilizer bar attachment bolts to 16 ft. lbs. (21 Nm).
    6.  
    7. Make sure spacers are used on the power steering pump brace so there will not be any tighten on the bracket due to misalignment.
    8.  

  2.  

1987-88 735i Models
  1. Loosen the hose clamp for the air intake hose. Remove the mounting nut for the air cleaner, and remove the air cleaner. Remove the fan and shroud.
  2.  
  3. Unfasten the electrical plug and overflow hose from the coolant expansion tank. Be careful not to kink the hose. Remove the mounting nuts and remove the tank.
  4.  
  5. Remove the splash guard for the power steering pump. Loosen the locknut for the pump adjustment and remove the through bolt that mounts the pump lower bracket (which contains the adjustment mechanism) to the block. Swing the bracket aside. Unscrew the bolt attaching the power steering pump lines to the block and shift them aside too.
  6.  
  7. Unfasten the electrical plug for the suspension leveling switch on the left side engine mounting bracket. Remove the oil pan drain plug and drain the oil.
  8.  


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.

  1. Remove the bracket for the exhaust pipes located near the oil pan.
  2.  
  3. Disconnect the ground strap from the engine. Remove the nuts and washers attaching the engine to the mounts on both sides.
  4.  
  5. Attach an engine lifting sling to the hooks at either end of the cylinder head. Lift the engine as necessary for clearance.
  6.  
  7. Remove all oil pan mounting bolts and remove the pan.
  8.  

To install:
  1. Clean both sealing surfaces and supply a new gasket. Coat the 4 joints (between the block and timing case cover at the front and the block and rear main seal housing cover at the rear) with a sealer such as 3M Bond Silicone Sealer®.
  2.  
  3. Install the oil pan bolts and tighten them to 6.5-7.5 ft. lbs. (8-10 Nm).
  4.  
  5. Reverse the remaining procedures to install the oil pan. Tighten the engine mount nuts to 31-34 ft. lbs. (40-44 Nm). Refill the oil pan with the required amount and type of oil.
  6.  

 
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