Changing The Hydraulic Oil - JUNTTAN PM 20L Operator's Manual

JUNTTAN
Routine service section
7.4.4

CHANGING THE HYDRAULIC OIL

Change or filter the hydraulic oil and clean the
tank through manhole (1) after the first 100
6
operating hours. From then on change or filter the
oil and clean the tank after every 1000 hours of
operation or at least once a year. When you re-
install the covers on the manholes make sure they
sit tightly and that the breather (2) is in good
working condition.
4
If there has been damage in the hydraulic system,
or if impurities or dirt have got into the hydraulic
5
system, change or filter the hydraulic oil and
clean the tank. If you find there is water in the
hydraulic oil, replace the oil and install water-
separating oil filters for the next 24 to 48 hours of
operation. Clean the filter bowls and replace the
elements whenever you change the oil or filter it.
If there have been impurities or water in oil, do 6
not use the machine until you have found and
eliminated the cause. Fully retract all cylinders to
minimize the amount of oil in the system. Drain
the tank through the drain-cock (3).
Use new clean oil of the same type that was
previously used. Large amounts of hydraulic oil
2
can be fed through the filling hole in manhole (1).
Always use pump which filtering the hydraulic
oil. Smaller amounts of oil can be pumped in
using the pump (4) in the hydraulic compartment.
Open valves (6) before start using the pump (4).
Close valves (6) after filling.
1
Use level glass (5) to check amount of oil.
Always fill the tank to the maximum level. Do
not operate the machine unless you can see the oil
3
level in the upper glass. Do not fill oil over the
maximum level, because room is needed for
thermal expansion and for turbulence of the
return oil. If the hydraulic oil tank is drained,
bleed air from the hydraulic pumps before start
using the machine.
n NOTICE
Do not mix different kinds of oil when refilling. If the hydraulic oil tank is drained,
bleed air from the hydraulic pumps before start using the machine.
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