Mazda 323/MX-3/626/MX-6/Millenia/Protégé 1990-1998 and Ford Probe 1993-1997

Oil Pump and Front Seal

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REMOVAL & INSTALLATION



See Figure 1

Due to space constraints, the 2.3L engine must be removed from the vehicle in order to service the oil pump assembly. Refer to the Engine Removal & Installation procedure earlier in this section.

  1. Disconnect the negative battery cable. Raise and safely support the vehicle.
  2.  
  3. Remove the timing belt. Remove the crankshaft damper retaining bolt, the damper and the timing belt sprocket. Drain the engine oil and remove the oil pan.
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of a typical oil pump assembly

  1. Remove the oil pump pickup tube-to-oil pump bolts, the tube and gasket.
  2.  

When removing the pump housing from the front of the block, some engines have an additional engine block support structure which the bottom surface of the pump seals against. This may make it difficult to remove the pump. Try not to pry between gasket mating surfaces and always pull the pump outward from the engine, not up.

  1. Remove the oil pump housing-to-cylinder block bolts, the pump and, if equipped, the gasket.
  2.  
  3. If necessary, pry the oil seal from the pump and clean the seal bore.
  4.  
  5. Thoroughly clean all of the gasket mounting surfaces. Inspect the pump and gears for wear.
  6.  

To install:
  1. Apply a continuous bead of silicone sealer to the oil pump gasket surface.
  2.  

Do not allow the sealer to squeeze into the pump's outlet hole in the pump or cylinder block.

  1. Install a new O-ring into the pump body.
  2.  
  3. Install the oil pump to the cylinder block; be careful not to cut the oil seal lip. Tighten the oil pump-to-cylinder block bolts to specifications.
  4.  
  5. Install the oil pump pickup tube using a new gasket.
  6.  
  7. Install the oil pan and the crankshaft sprocket. Tighten the crankshaft sprocket bolt to specifications.
  8.  
  9. Connect the negative battery cable and refill the crankcase. Start the engine and check for leaks.
  10.  

FRONT SEAL REMOVAL & INSTALLATION



See Figures 2 and 3

  1. Disconnect the negative battery cable. Raise and safely support the vehicle.
  2.  



Click image to see an enlarged view

Fig. Fig. 2: Remove the front engine seal by cutting the seal lip then, so as not to damage the crankshaft, carefully pry the seal out with a prybar

  1. Remove the timing belt. Remove the crankshaft damper retaining bolt, the damper and the timing belt sprocket. Remove the sprocket key from the crankshaft.
  2.  
  3. Using a small prybar, pry the oil seal from the engine block; be careful not to score the crankshaft or the seal seat. Clean the seal bore.
  4.  

To install:
  1. Using an oil seal installation tool or equivalent, lubricate the seal lip with clean engine oil and drive the new seal into the engine until it seats.
  2.  



Click image to see an enlarged view

Fig. Fig. 3: Install the seal using an appropriate driver, which fits over the crankshaft snout and presses on the outside edge of the seal

  1. The rest of the installation is the reverse of the removal procedure. Tighten all bolts to the proper specification.
  2.  

 
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