Nissan Maxima 1993-1998 Repair Guide

Oil Pump

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REMOVAL & INSTALLATION



VG30E Engine

See Figure 1

  1. Remove all accessory drive belts and the alternator.
  2.  
  3. Remove the timing belt covers and remove the timing belt.
  4.  
  5. Drain the engine oil and remove the oil pan.
  6.  
  7. Remove the oil pump assembly-to-engine bolts, along with the oil strainer, and remove the assembly from the engine.
  8.  

To install:


Click image to see an enlarged view

Fig. Fig. 1: Exploded view of a VG30E oil pump and related components with torque specifications

  1. Pack the oil pump full of petroleum jelly to prevent the pump from cavitating when the engine is started.
  2.  
  3. Install the oil pump and torque the oil pump-to-engine long bolts to 9-12 ft. lbs. (12-16 Nm) and short bolts to 4.3-5.1 ft. lbs. (6-7 Nm).
  4.  
  5. Using a new O-ring, install the strainer and torque the strainer-to-oil pump bolts to 12-15 ft. lbs. (16-21 Nm) and the strainer-to-engine bolt to 4.6-6.1 ft. lbs. (6.3-8.3 Nm).
  6.  
  7. Install the oil pan.
  8.  
  9. Install the timing belt and covers.
  10.  
  11. Install the alternator and all drive belts.
  12.  
  13. Start engine and check for oil leaks.
  14.  

VE30DE Engine

See Figure 2

The oil pump is an integral part of the timing chain cover. The cylinder heads and the oil pan must be removed to remove the timing chain cover. Refer to the Timing Chain heading within this section for information on removal of the timing chain cover.

  1. Remove all accessory drive belts and the alternator.
  2.  
  3. Remove the cylinder heads.
  4.  
  5. Remove the crankshaft damper-to-crankshaft bolt and the damper.
  6.  
  7. Drain the engine oil and remove the oil pan.
  8.  
  9. Remove the oil strainer-to-engine bolt, oil strainer-to-oil pump bolts and the strainer.
  10.  
  11. Remove the timing chain cover-to-engine bolts and the timing chain cover.
  12.  
  13. Remove the oil pump assembly-to-engine bolts, along with the oil strainer, and remove the assembly from the timing chain cover.
  14.  
  15. Clean the gasket mating surfaces.
  16.  



Click image to see an enlarged view

Fig. Fig. 2: Exploded view of a VE30DE oil pump and related components with torque specifications

To install:
  1. Pack the oil pump full of petroleum jelly to prevent the pump from cavitating when the engine is started.
  2.  
  3. Apply a bead of liquid sealant to the timing chain cover mating surfaces.
  4.  
  5. Install the oil pump to the timing chain cover.
  6.  
  7. Install the timing chain cover and torque the timing chain cover-to-engine bolts to 4.6-6.1 ft. lbs. (6.3-8.3 Nm) except for bolt above oil filter housing and 12-15 ft. lbs. (16-21 Nm) for bolt above oil filter housing.
  8.  
  9. Using a new gasket, install the strainer and torque the strainer-to-timing chain cover bolts to 12-15 ft. lbs. (16-21 Nm) and the strainer-to-engine bolt to 4.6-6.1 ft. lbs. (6.3-8.3 Nm).
  10.  
  11. Install the oil pan.
  12.  
  13. Install the cylinder heads.
  14.  
  15. Install the alternator and all drive belts.
  16.  
  17. Start engine and check for oil leaks.
  18.  

VQ30DE Engine

See Figure 3

The oil pump on the VQ30DE engine is located on the crankshaft behind the timing chain cover. The oil pans and the timing chain cover and timing chain must be removed to access the oil pump.

  1. Remove the upper and lower oil pans.
  2.  
  3. Remove the water pump cover.
  4.  
  5. Remove the timing chain cover.
  6.  
  7. Remove the timing chain.
  8.  
  9. Unbolt the oil pump strainer.
  10.  
  11. Unbolt the oil pump assembly from the engine block.
  12.  

To install:


Click image to see an enlarged view

Fig. Fig. 3: Exploded view of a VQ30DE oil pump and related components with torque specifications

  1. Pack the oil pump full of petroleum jelly to prevent the pump from cavitating when the engine is started.
  2.  
  3. Bolt the oil pump assembly to the engine block. Torque the bolts to 74.6-95.5 in.lbs. (8.43-10.8 Nm.).
  4.  
  5. Install the oil strainer. Be sure to use a new gasket.
  6.  
  7. Install the timing chain.
  8.  
  9. Install the timing chain cover.
  10.  
  11. Install the water pump cover.
  12.  
  13. Install the upper and lower oil pans.
  14.  

 
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