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Constant Vacuum Generator

  1. Disconnect hose No. 33 from frequency solenoid valve B and connect a vacuum gauge to hose. Start engine and allow to run at idle. After vacuum stabilizes, reading should be 6-11 in. Hg vacuum.
  2. If vacuum stabilizes within range, constant vacuum generator is okay. Reconnect hose to frequency valve B. If vacuum stabilizes above or below specified range, replace constant vacuum generator.
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