9 Maintenance and Inspection9.3 Notes on Grease Replenishment/Exchange Procedures9-12155976-1CDHW0485249ES165D9.3.3 Grease Replenishment/Exchange for U-Axis Speed ReducerFig. 9-6: U-Axis Speed Reducer Diagram9.3.3.1 Grease Replenishment(Refer to Fig. 9-6 “U-Axis Speed Reducer Diagram”.)1. Make the U-arm horizontal to the ground.2. Remove the hexagon socket head plug PT1/8 from grease exhaustport.3. Install a grease zerk A-PT1/8 to the grease inlet. (The grease zerk isdelivered with the manipulator.)4. Inject grease through the grease inlet using a grease gun.– Grease type: Molywhite RE No. 00– Amount of grease: 280 cc(560 cc for 1st supply)– Air supply pressure of grease pump: 0.3 MPa or less– Grease injection rate: 8 g/s or less5. Move the U-axis for a few minutes to discharge excess grease.6. Wipe the discharged grease with a cloth, and reinstall the plug. Beforeinstalling the plug, apply Three Bond 1206C on the thread part of theplug, then tighten the plug with a tightening torque of 5 N•m(0.51 kgf•m).Hexagon socket head plug A-PT1/8Grease exhaust portGrease inletHexagon socket head plug PT1/8NOTE If grease is injected with the plug on, the grease will leakinside the motor and may cause a damage. Make sure toremove the plug before the grease injection.66 of 92
