C8 Maintenance    2. General Maintenance 
 
192  C Series Maintenance Manual Rev.2 
2.3.7 Joint #6 Reduction Gear Unit 
 
 
Remove the grease plug from the Joint #6 
grease inlet of the Arm #5. 
 
  Attach the grease nipple to the Joint #6 grease 
inlet. 
 
The grease plug attaching hole located near the 
label with “6”  printed is the Joint #6 grease 
inlet. 
Be careful not to confuse it with the Joint #5 
grease inlet. 
  Inject grease from the grease nipple using a 
grease gun. 
Grease: SK-2 
Grease amount: 0.5g 
 
Be careful not to mix with the grease used in the 
Joint #5 (SK-1A). 
  Remove the grease nipple from the Joint #6 
grease inlet. 
 
  Attach the grease plug to the Joint #6 grease 
inlet. 
 
If the grease plug is damaged or deteriorated, 
replace it with a new one.