Brooks Automation 7. Service Procedures
Part Number: PF40-DI-00010 Rev. A Replacing the J3 (Elbow) Axis Motor or Timing Belt
Step Action
22.
Re-install motor, threading cables through the Z carriage first, and pulling timing belt over pulley flange.
Attach motor with (4) clamping screws. Do not tighten clamping screws all the way.
23.
Re-install the M4 X 20 mm Tension Bolt and compress the Tension Spring to the previous value.
Tighten the M4 Jam nut to lock the bolt and Tension Spring. This will cause motor assembly to pivot on
the shoulder screw and will apply tension to the timing belt.
Before tightening the clamping screws, rotate the J2 output pulley back and forth to ensure that the
timing belt is running true on the output pulley.
24.
Tighten the clamping screws.
If a Tension Meter is available check the belt tension for a minimum tension of 150N.(See Appendix E:
Belt Tensions, Gates Tension Meter).
25.
Re-assemble the robot except for the front cover and top cover.
26.
Remove the Calibration Pins from the inside of the front cover extrusion and re-calibrate the robot
following the Calibration Procedure in Calibrating the Robot: Setting the Encoder Zero Positions.
Replacing the J3 (Elbow) Axis Motor or Timing Belt
Electrical Shock
Before replacing this motor, the AC power should be removed.
Tools Required:
l
3.0 mm hex driver or hex L wrench
l
2.5 mm hex driver or hex L wrench
l
2.0 mm hex driver or hex L wrench
l
Fine point tweezers
l
0.06 in flat blade screwdriver
Spare Parts Required:
l
J3 Motor Assembly (PF03-MA-00011) or J3 Timing Belt (PF00-MC-X0003)
l
2 1/8
th
by 8 in tie wraps
l
Loctite 222 and 243
The J3 Motor Assembly is composed of the J3 motor, connectors, and a timing belt pulley.
To replace the J3 (elbow) axis motor or timing belt, perform the following procedure:
Copyright © 2023, Brooks Automation
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