7 CARE AND MAINTENANCE
7.64 MHL380 D
7.9.13 Hydraulic system
h Filling quantities, oil quality, and oil change
intervals: Chapter
66H3.15 67HFuels, lubricants
and coolants, Chapter 7.8.3 Maintenance
and inspection plan, Chapter 7.2 Regular
oil analyses
Maintenance work on the hydraulic system is
limited mainly to the hydraulic fluid tank. No
other assemblies in the system require special
maintenance.
The pipe and hose network must be inspected
for leaks at regular intervals.
n
Danger to life due to hydraulic oil
• Do not use your bare hands to
perform the inspection. A fine
spray of liquid under high pres-
sure can penetrate the skin and
cause severe injuries.
In an emergency: Administer first
aid, seek treatment from a doctor
Absolute cleanliness is particularly
important for the hydraulic system.
Because of this, recommended in-
tervals for replacing the return filter
element, for cleaning the oil cooler
and for oil changes must be ob-
served.
Danger of injury due to residual
pressure and heat
The pressure in the hydraulic sys-
tem must be reduced before per-
forming any work on the hydraulic
system. Note the following points:
• Set down the loading equipment.
• Switch off the diesel engine.
• Activate the four-way control lever
in all directions (with the ignition
key in the contact position).
• Then unscrew the ventilation filter
(219/1) by one turn.
Hydraulic oil is hot at operating
temperature and may be under
pressure.
• Avoid touching hot oil or parts
carrying oil.
In an emergency: Administer first
aid, seek treatment from a doctor
Hydraul
ic
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