BA 5230 en 04/2011
Measures
Remarks
Periods
Check cooling coil for deposits
Every 2 years
See item 10.2.6.
Check the hose lines
Yearly
See item 10.2.9.
Change the hose lines
6 years from the manufacturing
date impressed
See item 10.2.9.
Check tightness of fastening bolts
After approx. 400 operating hours,
thereafter every 2 years
See item 6.16.
Inspection of the gear unit
Approx. every 2 years
See item 10.4.
10.1.1
General service lives of oil
According to the oil manufacturers, the following are the expected periods during which the oils can be
used without undergoing any significant change in quality. They are calculated on the basis of an average
oil temperature of 80 °C:
─ for mineral oils, biologically degradable oils and physiologically safe (synthetic esters) oils 2 years
or 10 000 operating hours
(does not apply to natural esters, such as rape-seed oils)
.
─ for polyαolefins and polyglycols, 4 years or 20 000 operating hours.
The actual service lives may differ. The general rule is that an increase in temperature of 10 K
will halve the service life and a temperature decrease of 10 K will approximately double the
service life.
10.2
Description of maintenance and repair works
10.2.1
Examine water content of oil, conduct oil analyses
More information about examining the oil for water content or conducting oil analyses is obtainable from
your lubricant manufacturer or our customer service.
•
For reference purposes, a fresh sample of the operating lubricating oil used must be sent with the used
oil sample to the analysing institute for analysis.
•
The oil sample must be taken downstream of the filter of the oilsupply system while the gear unit is
running. A suitable connection point is normally located upstream of the gear unit input (e.g. oildrain
cock in the pressure line).
•
A special sample container should be filled with the specified quantity of oil.
If there is no such sample container available, at least one litre of oil must be put in a
clean
,
transportworthy, sealable vessel.
10.2.2
Change oil
As an alternative to the oilchange intervals indicated in table 15 (see item 10.1) it is possible to have an
oil sample tested at regular intervals by the Technical Service of the relevant oil company and to have it
released for further use.
If further usability has been confirmed, no oil change will be necessary.
Please observe the separately attached instructions BA 7300.
•
The instructions in item 7.1 must be observed!
•
Drain the oil while the gear unit is still warm, i.e. immediately after shutting down the machinery.
