Clean up area motor and filter motor from dirty of dust use instrument air supply. Measure vibration-noise-temperature of FS and LS also add grease motor of FS and LS for 25 times-30 times. Write KW-Voltage-Ampere-Temperature of motor at ER5 & ER4. Add grease for 333 BC1 issue high vibration up 4 mm/s and high noise up 2 gE ( MUHAIMIN & DADANG )