Toyota Cressida/Corona/Crown/MarkII 1970-1982 Repair Guide

Air Valve

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the air hoses attached to the air valve.
  6.  
  7. Remove the coolant hoses attached to the valve.
  8.  
  9. Unplug the connector from the valve.
  10.  
  11. Remove the valve.
  12.  
  13. Install the parts in the reverse sequence of removal. Fill the cooling system and connect the negative battery cable.
  14.  
  15. Check the system for leaks.
  16.  

TESTING



  1. Check the engine RPM by pinching shut the air hose on the valve.
  2.  
    1. At low temperatures, below 60° C (140° F), the RPM should drop.
    2.  
    3. After warm-up, the RPM should not drop more than 150 RPM.
    4.  

  3. Check the opening condition of the air valve.
  4.  
  5. Disconnect the air hose and check that the valve opens slightly when the temperature is about 20° C (68° F).
  6.  

 
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