34
Hydrostat transmission
Warning
Risk of injury due to high pressure (up to
410 bar) in the hydraulic system.
► Check the hydraulic hoses for leaks,
damage and chafe points.
Warning
When oil leaks there is a danger of environ-
mental pollution.
► Check the hydraulic drive system for
leaks before and after mowing.
Fig. 12:
In warmed up condition, the oil level must be at
“MAX” marking. In cold condition, the oil level
can be somewhat below, in hot condition the
oil level can be somewhat above the "MAX"
marking.
There always must be oil in the compensation
tank so that no air can enter the hydraulic sys-
tem.
Oil changes must be carried out by an author-
ised service centre (see chapter Maintenance
table).
Check if the gearbox fan is undamaged.
The hydrostatic drive generates a monotone
working noise that gets louder as the load is in-
creased (e.g. in steep terrain). If the working
noise changes, if it gets irregular or very loud,
let the hydrostatic drive cool down and check
the oil level.
If the change working noise still exists, have
the device checked by an authorised service
centre.
It is possible that the hydraulic system must be
ventilated or the oil must be changed. For re-
filling, only use fully synthetic engine oil 5 W50.
Summary of Contents for 021917080011
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