Fanuc Robot M-20iA/20M

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

Mechanical unit cable and welding cable

Retightening external main bolts

Check the mechanical stopper and adjustable mechanical stopper

Cleaning each parts and inspection

Check the end effector (hand) cable

Supply grease to J6-axis reducer (M-20iA/20M)

i) Replenish the J6-axis reducer with grease about every 12 months or after 3840 hours of operation.

ii) See Fig. 3.1 and Table 3.1 for greasing points and the method.

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 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

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.