Terex TW85, Operating Instructions Manual

Page: 96 / 125

7 Maintenance and care
90 TW85
7.9.8 Hydraulic oil return filter
Cartridge maintenance intervals
•
The filter cartridge must be replaced as soon as
the filter maintenance indicator lamp (75/30) on
the instrument panel lights up during operation.
After a larger repair job, following the test
run the filter cartridge of the return filter
(74/3) must be replaced as well.
Defective hydraulic attachments may
shorten the life of the return filter.
Changing the filter insert
•
Switch off the engine.
•
Detach the breather (74/2).
•
Remove the cover (76/1) of the return filter.
•
Pull out the filter bowl (76/2) together with the
filter insert (76/3).
Always place a receptacle for the
collection of waste oil under the working
area when removing the filter insert.
•
Remove the filter insert from the filter bowl by
turning and pulling at the same time.
•
Clean the filter bowl with petroleum ether or
similar.
•
Check O-rings (76/4; 76/5, 76/6) and replace
any defective parts.
•
Insert a new filter element in the filter bowl.
•
Install the filter bowl in the tank, together with
the new insert.
•
Apply a light coat of grease to the cover and
tighten the cover by hand.
•
Screw back in the breather.
•
Check the tightness of the filter.
HM32-075
0
4/4
,
!
P
30
Fig. 75 Operation
5
3
HM32-074
1
4 2
Fig. 74 Hydraulic oil tank
1
4
5
2
3
6
HR32-062
Fig. 76 Return filter