4 Repair
4.7.1. Replacement of motor, axis 1
3HAC026048-001 Revision: A154
© Copyright 2006-2008 ABB. All rights reserved.
7. Fit the measuring tool to the rear of the motor. Art. no. is specified in Required
equipment on page 152.
Shown in the figure below.
8. Rotate the motor shaft several turns, using the
measuring tool.
There must always be some backlash, meaning
that the shaft should go easy to rotate!
9. Place the tip of a dial indicator against the scribed
mark on the measuring tool.
The tip of the dial indicator must
measure on a 50 mm radius from
the center of the motor shaft.
xx0200000473
A. Measuring tool
10. Set the gear play to 0.02 mm, which corresponds
to a reading on the dial indicator of 0.13 mm.
11. Pull gently in one direction. Note the reading.
(The gear must not turn.)
12. Then gently knock on the tool in the other
direction and note the reading. The difference in
reading = gear play. The gear play should be 0.02
mm which corresponds to a reading on the dial
indicator of 0.13 mm.
13. Tighten the motor attachment screws. 4 pcs. Tightening torque: 23 Nm.
14. Refit the connection box with the three
attachment screws and plain washers.
Make sure the gasket is fitted properly!
Shown in the figure Location of
motor, axis 1 on page 151.
15. Reconnect the connectors R3.MP1 and R3.FB1.
xx0200000406
• A: R3.MP1
• B: R3.FB1
• C: Connection box
Action Note/Illustration
Continued
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