2. Check valve #1.
- I) Connect battery voltage to valve #1 terminals and check that air flows between filter and hose "E1".
- b) Disconnect the battery and make sure that air passes between the hoses "E1" And "G".
3. Check valve #2.
- A) Apply battery voltage to valve #2 terminals and check that air is passing between the hoses "F" And "E2".
- b) Disconnect the battery and make sure that air passes between the filter and the hose "E2".