VW Passat & Audi A4 1990-2000

Oil Pump

Print

REMOVAL & INSTALLATION
1990-97 Passat Models


Click image to see an enlarged view

Fig. A hex key may be required to remove the oil pump pickup bolts.



Click image to see an enlarged view

Fig. Once the bolts have been removed, pull the oil pump pickup tube down and toward you. You may have to gently rock the tube to free it from the pump



Click image to see an enlarged view

Fig. A ratchet and a socket can be used to speed the removal of the oil pump bolts



Click image to see an enlarged view

Fig. As always, note the location and length of each bolt upon removal



Click image to see an enlarged view

Fig. Remove the lower pump housing to inspect the gears



Click image to see an enlarged view

Fig. A gear driven pump produces pressure by compressing the oil with the teeth of the gears as they spin



Click image to see an enlarged view

Fig. Look for chips or teeth missing



Click image to see an enlarged view

Fig. Exploded view of the lubrication system components-1.8L engine, 2.0L (ABA) engine similar



Click image to see an enlarged view

Fig. Exploded view of the lubrication system components-2.8L VR6 (AAA) engine

  1. Note the radio security code and disconnect the negative battery cable.
  2.  
  3. Drain the engine oil into a suitable container.
  4.  
  5. Raise and safely support the vehicle and remove the oil pan.
  6.  
  7. Remove the mounting bolts and lower the pump from the engine.
  8.  
  9. Installation is in reverse order of removal noting the following:
  10.  
  11. Observe the following torque values:
  12.  
  13. Oil pump bottom cover bolts-7 ft. lbs. (10 Nm)
  14.  
  15. Oil pump suction foot bolts-7 ft. lbs. (10 Nm)
  16.  
  17. Oil pump retaining bolts-18 ft. lbs. (25 Nm)
  18.  
  19. Fill and top off the engine oil as necessary. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.
  20.  
  21. Check for any fluid leaks and repair as necessary.
  22.  

A4 & 1998-00 Passat Models
1.8L Engine
  1. Note the radio security code and disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Drain the engine oil into a suitable container.
  6.  
  7. Remove the oil pan.
  8.  
  9. Unhinge the baffle plate, then remove.
  10.  
  11. Remove the two oil pump-to-engine mounting bolts.
  12.  
  13. Press down on the subframe and remove the bolts.
  14.  



Click image to see an enlarged view

Fig. An exploded view of the oil pan, oil pump and related components of the 1.8L engine

To install:

  1. Installation is in reverse order of removal noting the following:
  2.  
  3. Press down on the subframe and install the oil pump.
  4.  
  5. Install the oil pump-to-engine mounting bolts and tighten to 18 ft. lbs. (25 Nm).
  6.  
  7. Install the oil pan.
  8.  
  9. Fill and top off the engine oil as necessary. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.
  10.  
  11. Check for any fluid leaks and repair as necessary.
  12.  

2.8L V6 Engine cover mounted pump

NOTE
The following procedure is for 1996-97 Audi A4 models, and 1998 A4 models up to serial No. (last 6 digits) 005000.

During the production of model year 1998 Audi A4 models, the oil pan, oil pump drive, and their location were changed.

The 1996-97 A4 models all use an oil pump that is part of the front engine cover.

The 1998 A4 models use this pump up to VIN No. (last 6 digits) 005000. The A4's using this front cover mounted type of pump can also be identified by a finned outer oil pan surface.


NOTE
The 1998-00 Passat models all use the later style of oil pan (smooth surface) and (chain driven) oil pump system.

  1. Note the radio security code and disconnect the negative battery cable.
  2.  
  3. Place the (hood) lock carrier in the service position. For additional information, please refer to the following topic(s): Body And Trim, Service Position, Front Bumper, Hood Lock Carrier.
  4.  
  5. Drain the engine oil into a suitable container.
  6.  
  7. Remove the lower engine oil pan.
  8.  
  9. Remove the accessory drive belt. For additional information, please refer to the following topic(s): General Information And Maintenance, Routine Maintenance And Tune-Up.
  10.  
  11. Remove the camshaft timing belt. For additional information, please refer to the following topic(s): Engine And Engine Overhaul, Timing Belt And Sprockets.
  12.  
  13. Drain the engine coolant into a suitable container.
  14.  
  15. Remove the crankshaft pulley.
  16.  
  17. Remove the center crankshaft bolt as follows:
  18.  
    1. Rotate the engine to Top Dead Center (TDC) for cylinder No. 3.
    2.  
    3. Remove the sealing plug from the lower left side of the engine block.
    4.  
    5. Lock the crankshaft using Tool No. 3242 or its equivalent.
    6.  
    7. Using a suitable 12-point socket and breaker bar, remove the bolt. Note the required torque for removal of this bolt exceeds 148 ft. lbs. (200 Nm).
    8.  

  19. From the front lower engine cover remove the following items:
  20.  
    1. The belt tensioner roller.
    2.  
    3. The oil spray jet.
    4.  
    5. The idler roller.
    6.  
    7. The belt tensioner.
    8.  
    9. The belt tensioner lever.
    10.  

  21. Remove the crankshaft timing belt drive gear.
  22.  
  23. Remove the front cover oil pump housing mounting bolts, and then remove the cover/oil pump assembly.
  24.  



Click image to see an enlarged view

Fig. Insert Tool No. 3242 or its equivalent to lock the crankshaft to remove the front crankshaft bolt

To install:

  1. Installation is in reverse order of removal noting the following:
  2.  

Observe the following torque specifications upon installation:



Oil pump-to-cylinder block M6: 88 inch lbs. (10 Nm)
 

Crankshaft center bolt:



Step 1: 148 ft. lbs. (200 Nm)
 
Step 2: 90°
 
Step 3: 90°
 

  1. Clean the gasket mating surfaces for the oil pan and pump.
  2.  
  3. Install the oil pump and verify the oil pump drive is properly engaged into the end of the crankshaft.
  4.  
  5. Fill and top off the engine oil and engine coolant as necessary. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.
  6.  
  7. Check for any fluid leaks and repair as necessary.
  8.  

2.8L V6 Chain driven oil pump

NOTE
The following procedure applies to the following 2.8L V6 equipped models:



1998 A4 models from serial No. (last 6 digits) 005001
 
1999-00 A4 models, and 1998-00 Passat models
 

During the production of the 1998 A4 models, beginning with VIN No. (last 6 digits) 005001, the 2.8L V6 engine oil pump has been relocated from the front cover to the oil sump, is chain driven and mounted to the front lower portion of the engine block.

The A4 models produced with the chain driven oil pump can also be identified by the appearance of the lower oil pan surface, which is smooth unlike the finned oil pans found on earlier models.


NOTE
The 1998-00 Passat models all use the later style of oil pan (smooth surface) and (chain driven) oil pump system.

To replace the oil pump, proceed as follows:

  1. Note the radio security code and disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle.
  4.  
  5. Drain the engine oil into a suitable container.
  6.  
  7. Remove the engine oil pan.
  8.  
  9. Remove the oil supply tube mounting bracket fasteners, and then remove the lager of the two supply tubes.
  10.  
  11. Use a Torx® T45 wrench to remove the center bolt for the oil pump dive sprocket, and remove the sprocket.
  12.  
  13. Remove the oil pump mounting bolts and remove the pump along with the short oil supply tube.
  14.  



Click image to see an enlarged view

Fig. From VIN 8D-W-005 001, the 2.8L V6 engine oil pump is in the oil sump, chain driven and mounted to the front lower portion of the engine block



Click image to see an enlarged view

Fig. An exploded view of the 2.8L V6 chain driven oil pump

To install :

  1. The balance of installation is in reverse order of removal noting the following:
  2.  
  3. Thoroughly clean the sealing surfaces of the engine block and oil pan before installation.
  4.  
  5. Replace all gaskets and O-rings
  6.  
  7. Install the short oil tube to the oil pump and upper oil pan and install the oil pump. Apply a locking agent to the oil pump mounting bolts and tighten to 18 ft. lbs. (25 Nm).
  8.  
  9. Install the long oil tube and apply a locking agent both of the oil tube retainer bracket bolts and tighten to 88 inch lbs. (10 Nm).
  10.  
  11. Tighten the oil pan-to-engine block M10 fasteners to 33 ft. lbs. (45 Nm)
  12.  
  13. Install the lower oil pan using a new gasket.
  14.  

Observe the following tightening torque:



Oil pan-to-engine block, M6: 88 inch lbs. (10 Nm)
 
Oil pan-to-engine block, M10: 33 ft. lbs. (45 Nm)
 
Oil pan-to-transmission M8: 18 ft. lbs. (25 Nm)
 
Oil pan-to-transmission M10: 33 ft. lbs. (45 Nm)
 
Coolant line-to-oil pan: 88 inch lbs. (10 Nm)
 
Engine mount to subframe: 18 ft. lbs. (25 Nm)
 
Torque support-to-engine bracket M8: 18 ft. lbs. (25 Nm)
 
Torque support-to-engine bracket M10: 33 ft. lbs. (45 Nm)
 
Side brace-to-torque support bracket: 15 ft. lbs. (20 Nm)
 
Oil drain plug: 22 ft. lbs. (30 Nm)
 

  1. Tighten oil pan-to-engine block bolts in 2 stages and using a crisscross pattern working from the center outward. Tighten as follows:
  2.  
    1. Oil pan-to-engine block M6 bolts, Stage 1, 44 inch lbs. (5 Nm).
    2.  
    3. Oil pan-to-engine block M6 bolts, Stage 2, 88 inch lbs. (10 Nm).
    4.  

  3. Install the torque support onto the rubber buffer for the torque support and tighten bolts to 18 ft. lbs. (25 Nm).
  4.  
  5. Fill and top off the engine oil and engine coolant as necessary. For additional information, please refer to the following topic(s): General Information And Maintenance, Fluids And Lubricants.
  6.  
  7. Check for any fluid leaks and repair as necessary.
  8.  

 
label.common.footer.alt.autozoneLogo