What was found
WHEN THE RIGHT BLEED VALVE IS OPEN, AN OILY SOUR SMELL IS NOTICEABLY EVIDENT IN THE COCKPIT. WHEN THE RIGHT BLEED IS CLOSED, THE ODOR DISSIPATES. INSPECTED RT ENGINE INLET, COMPRESSOR SECTION AND HIGH AND LOW BLEED PORTS, AND FOUND NO SIGN OF OIL. INSPECTED RT ACM AND FOUND SHAFT DIFFICULT TO ROTATE. REPLACED RT ACM IAW SAAB MTX WORK CARD 1753 FCK GOOD.