Toyota Tercel 1984-1994 Repair Guide

Valve Stem Seals

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REPLACEMENT



See Figures 1, 2 and 3


CAUTION
On models equipped with a Supplemental Restraint System (SRS) or "air bag,'' work must NOT be started until at least 90 seconds have passed from the time the ignition switch is turned to the LOCK position and the negative cable is disconnected from the battery.

Cylinder Head Installed
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the valve cover, camshaft and rockers using the procedures outlined in this section.
  4.  
  5. Remove the spark plugs.
  6.  
  7. Attach a fixture at the flywheel or front of the engine to prevent the engine from rotating. Make sure the fixture will not damage any components in case of movement.
  8.  
  9. Thread an adaptor into the spark plug holes that can be hooked up to a shop compressor air hose.
  10.  
  11. Apply 90 psi of compressed air to the adaptor hose. This is done to keep the valves from dropping down into the cylinder when the valve springs are removed.
  12.  


CAUTION
To avoid personal injury, wear eye and ear protection. Keep hands and clothing away from engine parts that move in case air pressure does cause rotation.

  1. With the cylinder under pressure, remove the valve spring retainer and the spring using a spring compressor tool. Hitting the spring retainer lightly with a soft hammer may help loosen the valve keepers if the retainer will not move downwards exposing the keepers.
  2.  


WARNING
DO NOT push the valve downwards into the cylinder when the spring is removed. Doing so will only introduce the potential of the valve dropping into the cylinder, possibly causing valve, piston, and cylinder wall damage. Head removal would be required to retrieve it.

  1. With the valve spring and retainer removed, remove the oil seal. On 3E and 3E-E engines, remove the seal using a pair of pliers.
  2.  

To install:
  1. Install a new seal. Rotate the oil seal to check that it is firmly installed.
  2.  
  3. Install the valve spring, retainer and keepers. Follow procedures described earlier.
  4.  
  5. Release the air pressure from the cylinder.
  6.  
  7. Install the rockers, camshaft, and valve cover as described in this section. Adjust the valves as necessary.
  8.  
  9. Install the spark plugs.
  10.  
  11. Connect the negative battery cable. Start the engine and check for proper operation.
  12.  



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Fig. Fig. 1: Use pliers to pull out the oil seal on 3E and 3E-E engines



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Fig. Fig. 2: Installing the valve seals on 3A and 3A-C engines



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Fig. Fig. 3: When installing the valve seals on 3E and 3E-E engines, push down on the points shown. Rotate the oil seal to check that it is firmly seated

Cylinder Head Removed
  1. Remove the cylinder head. Use the procedures outlined earlier in this section.
  2.  
  3. Remove the camshaft, rockers, valve springs and retainers using the appropriate procedures.
  4.  
  5. Remove the oil seal. On 3E and 3E-E engines, remove the seal using a pair of pliers.
  6.  
  7. Installation is the reverse of removal. Refer to the appropriate procedures in this section to assure proper installation.
  8.  
  9. Connect the negative battery cable. Start the engine and check for proper operation.
  10.  

 
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