OM 28Z3 US – Edition 2.0 * 28Z3b520.fm 5-19
Maintenance
Important information for the use of biodegradable oil
• Use only the biodegradable hydraulic fluids which have been tested and approved by
Wacker Neuson GmbH. Always contact Wacker Neuson for the use of other products
which have not been recommended. In addition, ask the oil supplier for a written decla-
ration of guarantee. This guarantee is applicable to damage occurring on the hydraulic
components, which can be proved to be due to the hydraulic fluid.
• Use only biodegradable oil of the same type for filling up. In order to avoid misunder-
standings, a label providing clear information is located on the hydraulic oil reservoir
(next to the filler inlet) regarding the type of oil currently used!
The combined use of two different biodegradable oils may affect the quality of one of
the oil types. Therefore, make sure the remaining amount of initial hydraulic fluid in the
hydraulic system does not exceed
8 % when changing biodegradable oil (manufacturer indications).
• Do not fill up with mineral oil – the content of mineral oil should not exceed 2 % in order
to avoid foaming problems and to ensure biological degradability.
• When running the machine with biodegradable oil, the same oil and filter replacement
intervals are valid as for mineral oil – see chapter 5.15 Maintenance plan (overview) on
page 5-35
• Always have the condensation water in the hydraulic oil reservoir drained by an autho-
rized Wacker Neuson service center before the cold season. The water content may
not exceed 0.1 % by weight.
• The instructions in this Operator's Manual concerning environmental protection are also
valid for the use of biodegradable oil.
• If additional hydraulic attachments are mounted or operated, use the same type of
biodegradable oil for these attachments to avoid mixtures in the hydraulic system.
Subsequent change from mineral oil to biodegradable oil must be performed by an autho-
rized Wacker Neuson service center.
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