99 / 109
BA 5846 en 05/2015
10.2.2 Change oil
As an alternative to the oilchange intervals specified in table 17 (see item 10.1), it is possible to have an
oil sample tested at regular intervals, every 4 weeks, by the technical service of the relevant oil company
and to have it cleared for further use.
If further usability has been confirmed, no oil change will be necessary.
Note
Observe the separately annexed operating instructions BA 7300 and the notes in item 7.1.
• Drain the oil while the gear unit is still warm, i.e. immediately after stopping the machinery.
NOTICE
Material damage
Risk of damage to the gear unit through incorrect lubrication resulting from mixed oils.
When changing the oil, always refill the gear unit with the same type of oil.
Never mix different types of oil and/or oils made by different manufacturers. Polyglycolbased synthetic
oils in particular must not be mixed with PAObased synthetic oils or mineral oils. If changing to a different
type and/or make of oil, the gear unit must be flushed out with the new oil type.
Flushing is not necessary, if the new operating oil is fully compatible with the previously used operating
oil in all respects. The compatibility must be confirmed by the oil supplier.
If there is a change to another oil, Siemens recommends flushing out the gear unit with the new type of
operating oil.
Note
When changing the oil, the housing and the oilsupply system must be flushed with oil to remove sludge,
metal particles and oil residue. Use the same type of oil as is used for normal operation. Highviscosity
oils must be heated beforehand using suitable means. Ensure that all residues have been removed
before filling with fresh operating oil.
• Place suitable containers under the oildrain points.
• Remove any dirt in the area of the inspection and/or assembly cover or that of the marked oilfilling
point.
• Undo and remove the fastening screws of the inspection and/or assembly cover.
• Remove the cover with the seal from the housing. The seal will be used again.
• Unscrew the air filter with the reducing screw or the wetair filter from the housing top.
• Unscrew the oildrain plug and/or open the oildrain cock and drain the oil into the collecting container.