Every 2000 operating hours
BOMAG 83BMP 8500
Every 2 000 operating hours
5.23 Change hydraulic oil and fil-
ter
See also the notes on the hydraulic system in the
chapter "General notes on maintenance".
Danger of scalding!
When draining off hot hydraulic oil!
The hydraulic oil must also be changed after
major repairs in the hydraulic system.
Perform the oil change when the hydraulic oil
is warm.
Replace the hydraulic oil filter element with
every hydraulic oil change.
Clean the area round hydraulic oil tank, filler
opening and breather filter.
Do not start the engine after draining the hy-
draulic oil.
Do not use any detergents to clean the system.
For quality and quantity of oil refer to the "table
of fuels and lubricants".
When changing from mineral oil based hydrau-
lic oil to an ester based biologically degradable
oil, you should consult the lubrication oil serv-
ice of the oil manufacturer for details.
Catch running out oil and dispose of environ-
mentally.
l Drive the machine, until the hydraulic oil has
reached operating temperature.
l Shut down the engine.
Fig. 123
l Unscrew the plug (Fig. 123) and drain off all
hydraulic oil.
l Turn the plug tightly back in.
Fig. 124
l Unscrew the filter cover 1 (Fig. 124) and take
out the filter element.
We recommend to use the BOMAG filling and fil-
tering unit with fine filter to fill the system. This en-
sures finest filtration of the hydraulic oil, prolongs
the lifetime of the hydraulic oil filter and protects
the hydraulic system.
l Fill in new hydraulic oil.
l Insert a new filter and reassemble the filter
cover.
l Replace the breather filter (2).
l Perform a test run and check the system for
leaks.
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