Air By-Pass Valve
Remove air by-pass valve. Connect vacuum pump to port "A" of valve. Apply vacuum and blow from port "B". See Fig 1 . Verify air flows at 11.8 in. Hg. If air does not flow, replace air by-pass valve.
Remove air by-pass valve. Connect vacuum pump to port "A" of valve. Apply vacuum and blow from port "B". See Fig 1 . Verify air flows at 11.8 in. Hg. If air does not flow, replace air by-pass valve.