CARE AND MAINTENANCE 7
MHL380 D 7.67
7.9.13.3 Hydraulic oil – return filter
h Replace as described in chapter 7.8.3
Maintenance and inspection plan.
Replace the filter element after a
test run if there is damage to the
hydraulics or following major repair
work.
Faulty hydraulic attachments can
reduce the service life of the return
filter.
The pressing force of the return fil-
ter must be routinely checked every
time the return filter is opened or
closed.
Replacing the filter element
Danger of injury due to falling
• Before replacing the filter ele-
ment, make sure that suitable
equipment for this purpose (e.g. a
pedestal) is at hand.
In an emergency: Administer first
aid, seek treatment from a doctor
The part must be replaced as soon as the
indicator (220/39) lights up continuously. The
indicator may light up briefly, but this is cir-
cumstantial and is usually caused by the en-
gine speed being increased too quickly.
The same procedure applies to both return fil-
ters!
â–º
Switch off the diesel engine.
â–º
Use a tool to loosen the cover (221/1) of
the return filter and then unscrew it.
â–º
Check the condition and seal of the cover.
â–º
Remove the return filter on the bow (221/6)
from the hydraulic tank.
â–º
Clean the O-ring (221/3) between the hy-
draulic tank and the return filter cover.
Fig. 220 Return filter clogging
Fig. 221 Return filter