ABB IRB 4400 - 45 Product Manual page 108

3 Maintenance
3.4.4. Oil change, gearbox axis 5 and 6 (all robot versions except IRB 4400/L10)
Continued
Draining oil
The procedure below details how to drain the oil from the wrist unit (axis 5 and 6).
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!
106
Action
1. Move the upper arm to a horizontal position and turn
axis 4 to the calibration position.
2. Turn axis 4 135°.
3. Remove the lower oil plug, draining at the rear of the
wrist.
4. Remove the other oil plug, draining.
5. Move axis 3 up -15° and let the oil run out for a couple
of minutes.
6. Turn axis 4 so that the oil plug, filling is facing
downwards.
7. Remove the oil plug, axis 5 to drain the oil.
8. Move axis 3 down to 0°.
9. Move axis 4 backwards and forwards a couple of
times to drain all the oil.
10. Clean and refit the both oil plugs, draining.
Info/Illustration
Shown in the figure Location
of oil plugs on page 105.
Capacity of oil collecting
vessel is specified in
Required equipment on
page 105.
Shown in the figure Location
of oil plugs on page 105.
Continues on next page
3HAC022032-001 Revision: E