What was found
GEN #1 DRIVE LIGHT/DISCONNECT. GROUNDED - YES. WHILE ACCOMPLISHING B737-800 IFIM TASK 24-11 TASK 801 GEN 1 DRIVE LIGHT ILLUMINATED, FOUND FUEL CONTAMINATON IN IDG. REMOVED AND REPLACED IDG ON #1 ENG IAW B737-800 AMM 24-11-11-000-801/400-801. REMOVED AND REPLACED IDG OIL COOLER ON NO 1 ENG UP TO SERVICING IDG AND POWERPLANT TEST REF TABLE (TASK 71-00-00-800-811-F00). OPS AND LEAK CHECK GOOD. PERFORMED IDG OIL COOLER LEAK TEST REF AMM 71-00-00-800-811-F00. LEAK TEST GOOD PERFORMED IDG OIL FLUSH/ OIL CHANGE REF AMM 12-13-21. LEAK CHECK GOOD, NO OIL CONTAMINATION NOTED.