Measure vibration, noise for FS & LS result high value, add grease for 60 times  for FS also 30 times for LS measure vibration below 4 mm/s, noise below 2 gE. Measure vibration, noise for FS & LS result high value add grease 15 times for LS and LS measure vibration below 4 mm/s, noise below 2 gE ( MUHAIMIN & ADI )