Charge Relief Valve
Remove charge relief valve. Connect vacuum pump to port "A" of valve. See Figure . Apply 8 in. Hg vacuum to port "A", and blow air into port "B". Replace charge relief valve if air does not flow from port "B" to port "C".
Remove charge relief valve. Connect vacuum pump to port "A" of valve. See Figure . Apply 8 in. Hg vacuum to port "A", and blow air into port "B". Replace charge relief valve if air does not flow from port "B" to port "C".