C8 Maintenance    2. General Maintenance 
 
C Series Maintenance Manual Rev.2  189 
2.3.4 Joint #3 Reduction Gear Unit 
 
  Remove the grease plug from the Joint #3 grease 
inlet of the Arm #2. 
 
  Attach the grease nipple to the Joint #3 grease 
inlet. 
 
  Inject grease from the grease nipple using a 
grease gun 
Grease: SK-1A 
Grease amount: 3g 
 
  Remove the grease nipple from the Joint #3 
grease inlet. 
 
  Attach the grease plug to the Joint #3 grease 
inlet. 
 
If the grease plug is damaged or deteriorated, 
replace it with a new one.