IAI America RCP4CR-SA7C - Manual (Page 68)

4. Maintenance Inspection
62
4.6.3 How to apply grease
(1) Remove the screws and detach the side covers on both sides. 
After Side Covers are Detached
(2) On the guide part, insert a spatula between the slider and the base or apply grease with a grease
injector while moving the slider back and forth.
Apply grease on both sides.
Wipe off the excess grease at the end.
Side Cover Attachment
Screws
Motor Side
Opposite Side of the Motor
Side Cover
Side Cover Attachment
Screws