Clean up area motor and filter motor. Measure vibration-noise-temperature of FS and LS. Add grease motor for 25 times and 30 times for FS and LS motor. Check at ER4 and ER5 for RPM-Voltage-Ampere-Temperature for L63 MD1-L63 FN1-473 FN7-463 MD1  write at check sheet form ( MUHAIMIN & DADANG )