Toyota Celica 1986-1993 Repair Guide

Oil Pump

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REMOVAL & INSTALLATION




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. If the vehicle has an air bag, you must wait at least 30 seconds after disconnecting the battery before doing any work. The SRS has a built-in backup which will allow the system to remain energized for a period of time after the power is disconnected.

  1. Disconnect the negative battery cable. Raise the front of the vehicle and support it with jackstands or equivalent.
  2.  
  3. Drain the engine oil and remove the engine oil pan as outlined.
  4.  
  5. Remove oil strainer. Using a suitable engine hoist, support the engine (remove engine hood if necessary).
  6.  
  7. Remove the timing belt, idler pulley and crankshaft timing pulley dipstick guide tube, using the proper procedures.
  8.  
  9. Remove the oil pump retaining bolts (note location of retaining bolts as the bolts are different sizes). Remove the oil pump assembly.
  10.  

To install:

  1. Installation is the reverse of the removal procedure. Place a new gasket in position on the cylinder block. Engage the spline teeth of the oil pump drive rotor with the large teeth of the crankshaft and slide the oil pump on. Place the bolts in the proper positions according to length and torque the oil pump retaining bolts evenly.
  2.  



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Fig. Fig. 1 Removing the oil pump and oil pan3S-FE engine



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Fig. Fig. 2 Removing the oil pump and oil pan4A-FE engine



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Fig. Fig. 3 Removing the oil pump and oil pan3S-GTE engine



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Fig. Fig. 4 Removing the oil pump and oil pan5S-FE engine

INSPECTION



Except 4A-FE Engine
  1. Remove the pump body cover.
  2.  
  3. Using a feeler gauge, measure the clearance between the driven rotor and the pump body. The clearance should be 0.0039-0.0063 in. (0.10-0.16mm) with a maximum of 0.0079 in. (0.20mm).
  4.  
  5. If the clearance is greater than the maximum, replace the oil pump rotor set and/or the pump body.
  6.  
  7. Using a feeler gauge, measure the clearance between both rotor tips. The clearance should be 0.0016-0.0063 in. (0.04-0.16mm) with a maximum of 0.0079 in. (0.20mm).
  8.  

4A-FE Engine
  1. Remove the pump body cover.
  2.  
  3. Using a feeler gauge, measure the clearance between the driven gear and the pump body. The clearance should be 0.0039-0.0071 in. (0.100-0.180mm) with a maximum of 0.0079 in. (0.20mm).
  4.  
  5. If the clearance is greater than the maximum, replace the oil pump gear set and/or the pump body.
  6.  



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Fig. Fig. 5 Checking the oil pump rotor body clearance2S-E and 3S-GE engines



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Fig. Fig. 6 Checking the oil pump rotor tip clearance2S-E, 3S-FE and 3S-GE engines

  1. Using a feeler gauge, measure the clearance between both gear tips. The clearance should be 0.0024-0.0071 in. (0.060-0.180mm) with a maximum of 0.0138 in. (0.35mm).
  2.  



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Fig. Fig. 7 Checking the oil pump rotor body clearance3S-GE and 3S-GTE engines



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Fig. Fig. 8 Checking the oil pump rotor tip clearance3S-GE and 3S-GTE engines

  1. If the clearance is greater than the maximum, replace the oil pump rotor set.
  2.  



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Fig. Fig. 9 Checking the oil pump rotor body clearance4A-FE engine

  1. Using a feeler gauge and a straight edge, measure the side clearance. The clearance should be 0.0010-0.0030 in. (0.025-0.075mm) with a maximum of 0.0039 in. (0.10mm).
  2.  
  3. If the clearance is greater than the maximum, replace the oil pump gear set and/or the pump body.
  4.  



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Fig. Fig. 1 0Checking the oil pump rotor tip clearance4A-FE engine



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Fig. Fig. 1 1Checking the oil pump rotor side clearance4A-FE engine

OVERHAUL



  1. Using snap ring pliers, remove the relief valve retaining ring. Remove the retainer, spring and valve.
  2.  
  3. Loosen the mounting screws and lift off the pump body cover. Lift out the drive and driven rotors as a set.
  4.  
  5. Remove the oil seal and discard.
  6.  



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Fig. Fig. 1 2Removing the oil pump oil seal2S-E and 3S-GE engines



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Fig. Fig. 1 3Installing the oil pump seal2S-E, 3S-FE and 3S-GE engines

  1. Install a new oil seal, driving it in with a seal driver tool to a depth of about 0.04 inch (1mm) from the pump body cover edge on the 2S-E, 3S-FE and 3S-GE engines. On the other engines, drive the seal in until it is flush with the oil pump cover edge. Apply a small amount of multi-purpose grease to the lip of the seal for break-in.
  2.  



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Fig. Fig. 1 4Oil pump relief valve components2S-E and 3S-GE engines shown



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Fig. Fig. 1 5Replacing the oil pump rotors2S-E and 3S-GE engines shown

  1. Position the new rotor set in the body. Make sure that the marks, if any, face the cover.
  2.  
  3. Check all clearances and then install the pump body cover over the rotor set. Tighten the screws to 82 inch lbs. (9.3 Nm) on the 2S-E engine, 78 inch lbs. (8.8 Nm) on the 3S-FE, 3S-GE, 3S-GTE and 5S-FE engines and 8 ft. lbs. (10 Nm) on the 4A-FE engine.
  4.  
  5. Install the relief valve with its spring and retainer and then pop the snap ring into place.
  6.  



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Fig. Fig. 1 6Oil pump components3S-FE, 3S-GE and 3S-GTE engines shown



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Fig. Fig. 1 7Oil pump components4A-FE engine shown

 
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