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Chapter 5 - Maintenance
5.4
Check Tension and Wear On J3 and J4 Drive Belts
Check the tension and wear on the Joint 3 and Joint 4 drive belts every 3 months.
1. Turn off main power to the controller.
2. Remove the access cover by loosening four screws (using 2.5 mm hex wrench) on
the under side of the outer link. See Figure 5-2. Note the path of the cable that
runs along the side of the opening so that you can route it the same way at the end
of this procedure.
3. Drop the Joint 3 brake assembly out of the way by removing 4 M3 x 8 screws
(using 2.5 mm hex wrench) and lowering the assembly. This makes it much easier
to access the drive belts.
NOTE: Be careful not to lose the four spacers that are between the brake
assembly and the outer link assembly. See Figure 5-4. These spacers are
necessary to ensure that the brake is aligned properly with the Joint 3
drive pulley.
4. Check the tension of the Joint 3 and Joint 4 drive belts with your fingers. See
Figure 5-3. The belts should feel tight to the touch. If there is any noticeable loose-
ness, call Adept Customer Service.
5. Inspect up in the drive belt area with a flashlight to look for signs of excess wear
from the drive belts. A small amount of residue or dust from the belts is normal.
Any larger particles that may indicate worn or broken teeth on the drive belts
could be a problem. Call Adept Customer Service if you discover anything that
looks unusual.
View of Underside of Adept 550 Outer LInk
Access Cover
Figure 5-2. Location of Access Cover on Underside of Outer Link
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Joint 3 Brake Assembly
Adept 550 Robot Instruction Handbook, Rev A
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