Clean up area motor, filter motor from dirty of dust use instrument air supply. Measure vibration-noise-temperature of FS and LS motor. Add grease motor for 15 times and 20 times for FS and LS motor, Write ampere-KW-temperature-voltage motor at ER3 and ER4 continue write at check sheet note Carbon Brush no8 at 363 MD1 -1 need to replace with spare unit ( EDI & ADI )