3 Maintenance
3.4.5. Oil change, gearbox axis 5 and 6 (IRB 4400/L10 only)
 3HAC022032-001  Revision: E110
© Copyright 2004-2008 ABB. All rights reserved.
Filling oil
The procedure below details how to fill oil to the wrist unit (axis 5 and 6), robot version IRB 
4400/L10.
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 Note/Illustration
1. Move the upper arm to a horizontal position and turn 
axis 4   to the calibration position.
2. Fill the wrist with lubricating oil through the oil plug 
hole, filling.
Art. no. and amount are 
specified in Required 
equipment on page 108.
Correct oil level is specified 
in section Inspection of oil 
levels on page 98.
3. Clean and refit the oil plug, filling.
Continued