Maintenance and care 7
TW85
91
7.9.9 Hydraulic oil suction filter
After a larger repair job on the hydraulic
system, following the test run the filter
cartridge of the suction filter (74/4) must
be replaced as well.
Changing the filter insert
•
Detach the breather (74/2)
•
Loosen filter cover (77/1) with auxiliary tool,
valve (77/2) in the locking disk of the paper
insert (77/9) closes.
•
Remove the assembly (77/10) by turning and
completely removing the filter cover, paying
attention to the O-ring (77/3).
Always place a receptacle for the
collection of waste oil under the working
area when removing the filter insert.
•
Grasp the assembly by the filter cover (77/1)
and unscrew the valve (77/2).
•
Remove the filter insert and dispose of
according to regulations.
•
Clean the filter cover with centre rod (77/8) and
the valve with diesel oil or benzine. While doing
so, pay attention to the retaining plate (77/6)
along with the seals (77/5, 77/7) and the
compression spring (77/4)
•
Check O-rings (77/3) and seals (77/5, 77/7,
77/11) and replace any defective parts.
•
Place surface “A” of the filter cover on a solid
base, push a new filter insert onto the centre
rod and fit onto the seal (77/5).
•
Push the filter insert downward against the
springs and tighten the valve (77/2) by hand.
•
Push the assembly (77/10) into the housing
(77/12), tighten the filter cover by hand and
ensure that the O-ring (77/3) is in exactly the
right position.
•
Retighten the filter cover with auxiliary tool.
•
Screw back in the breather.
•
Check the tightness of the filter by means of a
test run.
5
3
HM32-074
1
4
2
Fig. 74 Hydraulic oil tank
1
3
4
5
6
8
7
9
11
12
2
10
A
HM32-077
Fig. 77 Suction filter
Summary of Contents for TW85
Page 6: ...Table of contents TW85...
Page 112: ...7 Maintenance and care 106 TW85...
Page 125: ...Powered by TCPDF www tcpdf org...
