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MAINTENANCE
HYDRAULIC SYSTEM - CHANGE OIL, REPLACE
SUCTION STRAINERS AND PULSATION DAMPER
Filling the Hydraulic System
1. Make sure main shut-off valve (2), see illustration Z25010 on
page 398, is in open position.
2. Check to make sure that all connections are securely tight-
ened.
REMARK
Select hydraulic oil viscosity grade according to ambient tem-
peratures.
If the new hydraulic oil has a different viscosity grade compared
with the drained oil it is necessary to adjust the temperature
switch units according to the table on page 409.
3. On machines equipped with Central Refilling System fill main
hydraulic oil reservoir according to section
-Central Refilling System- on page 218.
On machine without central refilling system fill main oil reser-
voir through opening (4), illustration Z23099. Depending on
type of attachment and the present oil temperature, select the
applying oil level range on plate (3). Be sure to use the cor-
rect marking on oil level plate (3).
4. Remove the air from the hydraulic system according to the
instructions on page 411.
Legend for illustration Z23099
(1)
Main hydraulic oil reservoir
(2)
Hydraulic oil level sight gauge
(3)
Oil level plate
(4)
Oil filler plug
4.13 EVERY 2000 OPERATING HOURS OR YEARLY
407
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