3 Maintenance
3.4.3. Oil change, gearbox axis 4
103 3HAC022032-001 Revision: E
© Copyright 2004-2008 ABB. All rights reserved.
Draining
The procedure below details how to drain the oil from the gearbox, axis 4.
When changing gearbox oil, first run the robot for a time to heat up the oil. Warm oil drains
quicker than cold oil.
Changing and draining gearbox oil may require handling hot oil of up to 90 °C! Make sure
that protective gear like goggles and gloves are always worn during this activity.
Also, be aware of possible pressure build up in gearbox! When opening the oil plug, there
may be pressure present in the gearbox, causing oil to spray from the opening!
Filling
The procedure below details how to refill the oil to the gearbox, axis 4.
The specified amount of oil is based on the total volume of the gearbox. When changing the
oil, the amount of refilled oil may differ from the specified amount, depending on how much
oil has previously been drained from the gearbox.
When filling gearbox oil, do not mix different types of oil as this may cause severe damage
to the gearbox! Always use the type of oil specified by the manufacturer!
If the oils are mixed, the gearbox must be thoroughly rinsed! Contact ABB for further
instructions!
When filling gearbox oil, do not overfill, since this could lead to internal over-pressure
inside the gearbox which in turn may:
• - damage seals and gaskets
• - completely press out seals and gaskets
• - prevent the manipulator from moving freely
Action Info/Illustration
1. Move the arms backward and the upper arm to a
nearly vertical position.
2. Remove the lower oil plug, draining and drain the oil
into an oil collecting vessel.
Shown in the figure Location
of oil plugs on page 102.
Capacity of the oil collecting
vessel is specified in
Required equipment on
page 102.
3. Clean and refit the oil plug.
Action Note/Illustration
1. Move the upper arm to a vertical position (rear end
upwards).
Continued
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