Terex TW85 - Hydraulic Oil Suction Filter

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
42
Fig. 74 Hydraulic oil tank
1
3
4
5
6
8
7
9
11
12
2
10
A
HM32-077
Fig. 77 Suction filter