ABB IRB 120 Product Manual page 132

4 Repair
4.6.1. Replacing the lower arm
Continued
Removing the lower arm
Use this procedure to remove the lower arm.
130
Action
1.
DANGER!
Turn off all electric power, hydraulic and
pneumatic pressure supplies to the robot!
2. Remove the lower arm covers on both
sides of the robot.
3. Remove the cable harness in the lower arm. See section:
4. Unscrew the attachment screws securing
the lower and upper arms and separate the
two.
5. Unscrew the attachment screws securing
the motor cover to the lower arm plate.
6. Unscrew the attachment screws securing
the lower arm to gearbox axis 2.
7. Remove the lower arm.
8. Remove motor axis 3 and timing belt.
Info
xx0900000848
Parts:
• A: Attachment screws (4+4 pcs)
• B: Lower arm covers (1+1)
• Removing the cable harness in the
wrist on page 97
xx0900000859
Parts:
• A: Swing housing
• B: Gearbox axis 2
• C: Lower arm
• D: Attachment screws (16 pcs)
See section:
• Replacing motor axis 3 on page
152
Continues on next page
3HAC035728-001 Revision: B