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Air Conditioning System: Evacuating

WARNING: This page is about a different car, the 2002 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect quick disconnect adapter to charging hoses  . See Fig 1.
  2. Remove caps from service valves on refrigerant lines  .
  3. Set on manifold gauge set  .
    1. Close both hand valves of manifold gauge set.
    2. Connect the quick disconnect adapters to the service valves.
    Fig 1: Exploded View Of Quick Disconnect Adapter
    G01127784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Evacuate air from refrigeration system  .
    1. Connect the vacuum pump adapter to the vacuum pump. See Fig 2.
      Fig 2: Connecting Adapter To Vacuum Pump
      G01127785Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the center hose of the manifold gauge set to the vacuum pump adapter. See Fig 3.
    3. Open both the high and low hand valves and run the vacuum pump.
      4. NOTE: If the reading 750 mmHg (30 in. Hg) or more, close both hand valves of manifold gauge set and stop the vacuum pump.

      Check the system for leaks and repair necessary.

    4. After 10 minutes or more, check that the low pressure gauge indicates 750 mmHg (30 in. Hg) or more.
    5. Close both the high and low hand valves and stop the vacuum pump.
    6. Leave the system in this condition for 5 minutes or more and check that there is no change of gauge indicator.
    Fig 3: Connecting Manifold Gauge Set
    G01127786Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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