Stiga 13-7454-11, Workshop Manual

Page: 76 / 123

4.7 Repair
4.7.1 Changing hydraulic oil, filter
Contaminants must not enter the
hydraulic system or the fuel sys-
tem. This causes serious damage
to components of the systems.
Change hydraulic oil and filter as follows:
1. Run the machine to operating temper-
ature with varied workload so that the
hydraulic oil warms up.
2. Place the machine on a level surface.
3. Clean the area around the filter (A)
thoroughly on the upper part of the hy-
draulic tank and remove the filter bowl
and the filter as a unit.
Oil type: SAE 10W-30 is recommend-
ed. For use in winter a
ISO VG46 oil can be used.
This oil can also replace SAE 10W-30
if the hydraulic response is slow.
9. Reinstall the filter with the following
components:
A1: Filter bowl. Clean the filter bowl
carefully before installation.
A2: Gasket, check that the gasket is
intact.
A3: New filter. The filter must always
be replaced when changing the oil.
A4: Spring.
A5: Gasket, check that the gasket is
intact.
A6: Cap.
10. After filling the oil, start the engine and
Note It is very important that the filter
is not taken out of the filter bowl
before the filter bowl is removed
from the tank to reduce the risk
of contamination.
run the machine for a few minutes and
then check for oil leakage.
11. Check the oil level according
to ”4.7.2”.
4. Place a container under the oil drain
plug (B), remove the plug and allow
the oil to run out to the container. The
A C
container must have a capacity of 20
litres.
5. Dispose of the oil according to local
regulations.
6. Install the oil drain plug. Tighten to 25
Nm.
7. Replace the tank vent valve (C). The
valve is unscrewed and the new one is
installed in reverse order.
B
8. Fill with new oil through the 3/8” (D)
return connection for the PTO. Use a
pump with a 10 micron suction filter.
A6
A4
A5
A3
A2 A1
WORKSHOP MANUAL
TITAN
Chapter
4 - Hydraulic system
EDITION
2018
Page
7 4