What was found
ON CLIMBOUT, WHEN AUTOPILOT-B ENGAGED A/C BANKED HARD RT PAST 30 DEGREES. REATTEMPTED TO ENGAGE AUTOPILOT-B SAME RESULTS. AS SOON AS AUTOPILOT-B ENGAGED CONTROL WHEEL STEERING INDICATED ROLL RT, AUTOPILOT-A NORMAL. MAINT TROUBLESHOT AUTOPILOT SYS, B-SYS GOES HARD RT REGARDLESS OF MODE INPUTS, BITE TEST DID NOT REVEAL A FAILED COMPONENT. RANG OUT WIRING BETWEEN TRANSFER VALVE AND AUTOPILOT AILERON CONTROL ACTUATORS, ACTUATOR-B PINS INDICATE OPEN BETWEEN PINS 7 & 8, ALL OTHER ACTUATORS CHECKED GOOD. PARTS ORDERED. MAINTENANCE REMOVED AND REPLACED THE AUTOPILOT AILERON CONTROL ACTUATOR IAW BMM 22-011-012-4, OPERATIONAL CHECK WAS GOOD.