Vacuum Pump Check
- Connect a vacuum gauge to vacuum pump. Connect positive battery terminal to terminal No. 1 and negative battery terminal to terminal No. 2 of vacuum pump. See Fig 1 . Ensure a vacuum of at least 5.9 in. Hg can be held.
- Release vacuum. Reconnect battery and apply vacuum of 7.9 in. Hg. Disconnect battery. After 2 minutes, ensure vacuum of at least 5.9 in. Hg is held.