Toyota Corolla 1970-1987 Repair Guide

Oil Pump

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REMOVAL & INSTALLATION



Except Overhead Camshaft Engines
  1. Remove the oil pan from the engine. For details, please refer to the procedures found earlier in this section.
  2.  
  3. Unbolt the oil pump retainers, then remove the pump assembly.
  4.  
  5. Installation is the reverse of removal.
  6.  

Overhead Camshaft Engines

See Figures 1 through 16



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Fig. Fig. 1: Exploded view of the oil pump assembly



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Fig. Fig. 2: Aligning the oil pump drive gear with the crankshaft gear



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Fig. Fig. 3: Remove the crankshaft pulley using a suitable puller



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Fig. Fig. 4: View of the crankshaft pulley



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Fig. Fig. 5: Removing the timing scale lower cover mounting bolts



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Fig. Fig. 6: Removing the timing scale lower cover



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Fig. Fig. 7: Removing the oil dipstick guide



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Fig. Fig. 8: Replace this O-ring on the oil dipstick guide



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Fig. Fig. 9: Removing the timing belt guide



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Fig. Fig. 10: Removing the crankshaft timing pulley



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Fig. Fig. 11: Removing the oil pump body mounting bolts



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Fig. Fig. 12: Removing the oil pump assembly mounting gasket



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Fig. Fig. 13: Removing the oil pump assembly cover



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Fig. Fig. 14: With the cover removed the pump gears may be inspected or replaced



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Fig. Fig. 15: View of the oil pump drive and driven gears



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Fig. Fig. 16: Disassembling the oil pump assembly

4A-C (RWD) AND 4A-GE SERIES
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the fan shroud, then raise the front of the vehicle and support it safely using jackstands.
  4.  
  5. Drain the engine oil from the crankcase.
  6.  
  7. Remove the oil pan and the oil strainer.
  8.  
  9. Remove the crankshaft pulley, then remove timing belt. For details, please refer to the timing belt procedure located earlier in this section.
  10.  
  11. Remove the oil level gauge and guide. The guide tube is normally equipped with a small O-ring seal, check to make sure the seal is not damaged.
  12.  
  13. Remove the mounting bolts, then use a rubber mallet to carefully tap the oil pump body from the cylinder block.
  14.  
  15. If necessary, disassemble the pump for inspection and/or service.
  16.  

To install:
  1. If the pump was disassembled, install the drive and driven gears, then install the pump cover.
  2.  
  3. Install the oil pump to the block, using a new gasket. Make sure the pump drive gear is properly aligned with the crankshaft gear.
  4.  
  5. Secure the pump using the mounting bolts.
  6.  
  7. Installation of the remaining components is in the reverse order of removal.
  8.  

4A-LC (FWD) AND 1C-L DIESEL
  1. Disconnect the negative battery cable.
  2.  
  3. Raise the front of the vehicle and support it safely using jackstands.
  4.  
  5. If equipped, remove the engine splash shield(s).
  6.  
  7. Drain the engine oil from the crankcase.
  8.  
  9. Remove the right tire and wheel assembly, then unbolt part of the wheel well for access.
  10.  

At this point you will have to make a determination if this procedure will be possible with the engine in position. On most models it will be possible, just difficult. Check for clearance to remove the crankshaft damper, timing covers, timing belt and gears

  1. If it is determined that the engine must be raised or lowered.
    1. Matchmark and remove the hood.
    2.  
    3. Disconnect the center engine mount.
    4.  
    5. Attach an engine hoist to the two engine lifting brackets and suspend the engine. DO NOT lift the engine so far as to damage the halfshafts, wiring or other components.
    6.  

  2.  
  3. Remove the accessory drive belt(s).
  4.  
  5. If necessary, remove the water pump pulley and/or the A/C idler pulley.
  6.  
  7. Loosen and remove the retainer, then remove the crankshaft damper using a suitable puller.
  8.  
  9. Remove the lower timing cover.
  10.  
  11. Matchmark and remove the timing belt, then remove the crankshaft timing pulley.
  12.  
  13. Remove the oil pan and oil strainer.
  14.  
  15. Remove the oil level gauge and guide. The guide tube is normally equipped with a small O-ring seal, check to make sure the seal is not damaged.
  16.  
  17. Remove the mounting bolts, then use a rubber mallet to carefully tap the oil pump body from the cylinder block.
  18.  
  19. If necessary, disassemble the pump for inspection and/or service.
  20.  

To install:
  1. If the pump was disassembled, install the drive and driven gears, then install the pump cover.
  2.  
  3. Install the oil pump to the block, using a new gasket. Make sure the pump drive gear is properly positioned over the crankshaft keyway.
  4.  
  5. Secure the pump using the mounting bolts.
  6.  
  7. Installation of the remaining components is in the reverse order of removal.
  8.  

 
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