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MAINTENANCE
4.13.1 HYDRAULIC SYSTEM - CHANGE OIL, REPLACE SUCTION
STRAINERS AND PULSATION DAMPER
NOTICE
The hydraulic oil change intervals can be extended for a
further time period, when an oil sample analysis shows a
positive result. When extending the oil change interval, it
is necessary to carry out an oil sample analysis after
every 1000 operating hours.
However, it is recommended to change the hydraulic oil
and the suction strainers after 6000 operating hours at
the latest.
The pulsation damper must be replaced after every 2000
operating hours.
Legend for illust. Z25010
(1)
Main oil reservoir
(2)
Hand wheel of main shut-off valve
(3)
Compensator. Check condition and tightness of compensator and connected parts.
(4)
Intermediate pipe
(5)
Suction strainer
(6)
Suction strainer flange
(7)
Gaskets
(8)
Suction oil reservoir
Sequence of Servicing
Evacuate main hydraulic oil reservoir. Proceed according to
section "Central Refilling System" on page 218.
Drain the oil from return oil manifold, see page 401 for more
information.
Drain the oil from suction oil reservoir, see page 403 for more
information.
Replace main suction strainer (5) with gaskets (7), illustration
Z25010.
Replace suction strainers of the hydraulic pumps, see
page 403 for more information.
Replace oil cooler strainer and pulsation damper, see
page 401 for more information.
REMARK
With hydraulic oil reservoir empty, service the return oil filters
and leakage oil filter. Inspect the reservoir for sediments. Clean
the reservoir if necessary.
4.13 EVERY 2000 OPERATING HOURS OR YEARLY
399
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