What was found
DURING TAKEOFF, THE GLIDESCOPE, SPEED COMMAND AND COMPASS FLAGS CAME ON. ALSO, THE NR 1 EPR GAUGE INDICATOR STARTED TO DECREASE. ABORTED TAKEOFF AND RETURNED TO THE GATE. REPLACED THE LEFT ENGINE GENERATOR, CONSTANT SPEED DRIVE AND CONSTANT SPEED DRIVE OIL COOLER. FLUSHED AND CLEANED LINES AND OPERATIONAL CHECK GOOD.