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

JUNTTAN
7.4.6

REPLACING THE HYDRAULIC OIL FILTERS

Refer to Drawings number 451 048 and 451 050.
n ATTENTION
Absolute cleanliness in the hydraulic system is of utmost importance.
It is therefore essential that you adhere to the prescribed intervals for cleaning filter
bowls and replacing elements. Replace all the filter elements and clean the filter bowls
after the first 100 hours of operation. From then on do the same after every 1000 hours
of operation or at least once a year. Also replace the filter elements and clean the filter
bowls every time when damage occurs which contaminates the hydraulic system. The
filter elements must be changed when the indicator light for the element in the cab
comes on. If the warning lights keep a longer period on, stop the engine, check for
reason. Normally, the signal light of return filters can be on for 1 to 5 minutes after
starting the engine (if the temperature of the hydraulic oil is lower, the period is longer).
There is an indicator gauge for the leak oil filter in the hydraulic compartment.
There are six filters in the hydraulic system (drawing 451 048):
- two return filters (Items 1 and 2)
- three pressure filters (Items 3,4 and 5)
- one leak oil filter (6)
The pressure filters are in the engine compartment. Leak oil and return filters are in the
hydraulic compartment. The drain oil from the hydraulic winches flows through the leak
oil filter at the back of the hydraulic compartment.
n DANGER
Always relieve the tank pressure before replacing the hydraulic filters.
Routine service section
Relieve the tank
pressure by
opening the valve
113