Fanuc Robot M20iA/35M

1 Move the robot to the greasing posture described in Table 7.2.3.1 (b).

2 Turn off the controller power.

3 Remove the seal bolt or taper plug from grease outlet. (Fig.7.2.3 (b), (c), (e))

J1-axis : 1 location (seal bolt M8x10)

J2-axis : 3 locations (seal bolt M8x10)

J3-axis : 1 locations (J3-axis reducer first grease outlet ,seal bolt M8x10) *When robot is shipped after June,2011, robot has 2 grease outlet. Remove only first grease outlet.

4 Remove the seal bolt or taper plug from grease inlet and attach grease nipple.

5 Keep greasing until the new grease pushes out the old grease and comes out from each grease outlet.

6 Release remaining pressure using the procedure given in Subsection 7.2.3.6. In case of upside-down mount, pull out about 130cc grease to make space of grease bath.;

Check there is oil leak on sealed part of each joint parts.

If there is oil leak, clean them.

When air control set is combined

Check air pressure using the pressure gauge on the air regulator as shown in Fig.7.1.1 (c). If it does not meet the specified pressure of 0.49 to 0.69 MPa (5-7 kgf/cm2), adjust it using the regulator pressure-setting handle.

Check the drop quantity during wrist or hand motion. If it does not meet the specified value (1drop/10-20 sec), adjust it using the oiler control knob. Under normal usage, the oiler becomes empty in about 10 to 20 days under normal operation.

Check to see that the lubricator level is within the specified level.

Check the joints, tubes, etc. for leaks. Repair leaks, or replace parts, as required.

Check drain and release it. When quantity of the drain is remarkable, examine the setting of the air dryer to the air supply side.

Check the oil sight glass of J4, J5/J6-axis gearbox

1 Move the robot to the greasing posture described in Table 7.2.3.2 (b).

2 Turn off the controller power.

3 Remove any peripheral equipment, if it was mounted at the ventilator hole.

4 Put the oil pan under the oil outlet.

5 Block the gap using tape etc. to prevent oil from oil outlet intruding into the J4 connector panel. If robot is shipped before March,2009, remove the J4 connector panel mounting bolts and make plug of oil inlet/outlet can be seen. When moving the connector panel, remove user side or air joint if it is necessary. Then Remove taper plug or seal bolt or oil outlet and ventilator hole and exhaust oil.

6 When all oil is discharged, attach the taper plug. Replace the taper plug by new one. When reusing it, wind it with a seal tape.

7 According to description below, inject oil.

Check the oil sight glass of J4, J5/J6-axis gearbox (except M-20iA/20M)

Please confirm whether the amount of oil of the oil sight glass has come above Fig.7.2.3.2 (d), Fig.7.2.3.3 (c) and Fig. 7.2.3.4 (c) and replenish it if the level is low. When the oil sight glass does not have an air bubble then please check that the oil level is above the sight glass through the vent plug. A flashlight may be useful to see the level in the gearbox. Please consult your local FANUC representative if you have questions or concerns regarding the gearbox oil level.

Moreover, please exchange oil when it is discolored due to deterioration or the quality is questionable in the oil sight glass such as right side of Fig.7.1.2. Refer to Subsection 7.2.2 about replacing method of oil.

Check whether the cable connected to the teach pendant and robot is unevenly twisted.;

Check the mechanical cable. (Damaged or twisted)

Check the motor connector. (Loosening)

Retightening extemal main bolts

Check the mechanical stopper and adjustable mechanical stopper.

Check the oil sight glass of J4 to J6 axis