Mounting and Installation Notes D661-...G/S/H (B97072-661-001; Version G, 02/15)
Page 3/3
• Remove hexagon socket screws (5) with a wrench and
remove the filter cover (4). Remove the filter disk (2),
which is now accessible, with tweezers or a fine screw-
driver.
Fig.: Principles of construction
• Check O-rings (1) and (3) and replace if necessary.
• Install new filter disk. To do this, first insert the O-Ring
(1), then the filter disk (2) so that the side of the filter disk
with the indentation faces the outside. Insert O-ring (3) in
the filter cover (4) with some clean grease and mount.
• Cross-torque screws to:
• After start-up, check valve for external leakage.
Replacing O rings:
The mounting surface O rings may be re-
placed by the customer. Pay attention to cleanliness of the
valve and of the surroundings.
Transportation/storage:
Before transportation, seal the base
of the valve using a clean shipping plate or adhesive tape.
Seal the connector using a dust protection cap. Pack the valve
carefully so that it is not damaged during transportation or stor-
age.
Inspection:
Following a period of storage or no operation for
more than 5 years, we recommend that the valve is inspected
by an authorized service center, in order to prevent possible
damage.
Repairs:
Repairs may only be carried out by us or by our au-
thorized service centers.
9 Disposal
It is essential to comply with the relevant national waste dis-
posal regulations and environmental protection provisions
when disposing of valves, spare parts or accessories, packag-
ing that is no longer needed, hydraulic fluid or auxiliary materi-
als and substances used for cleaning!
Type
Series
Screw
Torque
[Nm] (lbf in)
Servo valve
D661
M5 x 8–10.9
8.34 (73.8)
4
5
3
2
1
