What was found
AFTER TAKEOFF, DURING GEAR RETRACTION, NR 2 ENGINE HYD PUMP CAUTION ILLUMINATED, THEN WENT OUT AFTER GEAR RETRACTED. LT MAIN DOORS SLOW TO CLOSE. HEARD A STRANGE STRAINING HYD SOUND NEAR NOSE. REAR F/A ALSO HEARD A STRAINING SOUND IN REAR OF ACFT. RETURNED TO FIELD. LANDING UNEVENTFUL. JACKED ACFT, FUNCTIONAL TEST OF LANDING GEAR PRIMARY EXTENSION AND RETRACTION SYS. BLED NR 2 SYS HYD, GEAR RETRACTION IS NORMAL, GEAR DOORS OPERATED NORMAL, NO STRANGE HYD SOUNDS WERE IDENTIFIED. NO OTHER DEFECTS NOTED. RETURNED TO SERVICE.