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Service
WARNING
Risk of personal injury due to hydraulic fl uid!
The tubes used to fi ll the chambers can be opened at the end.
The liquid can be come out with high fl ow without control.
Before starting to pressurize the actuator, make sure that the
tubes do not come out of the container during the fi lling stag-
es.
If installed fi t the external hydraulic circuit on the actuator
and fi ll the bodies through the circuit ports.
Fig. 9-32: Reassamble the hydraulic circuit
Fig. 9-33: Fill the HCD chamber through the hydraulic circuit
Connect pipes to the liquid container and manoeuvre the ac-
tuator until the rotation is regular.
If needed, move the actuator to release the excess air left in-
side and repeat the previous operation.
Make sure you have correctly fi lled the HCD bodies.
Screw the plug (339).
9-14
Fig. 9-34: Reassamble the plug in the HCD housing
Fig. 9-35: Reassamble the plug in the hydraulic circuit
Table 9-6: Liquid
Actuator Type 90° Rotation
HCD DAP / HCD SRP
30
60
100
150
300
450
600
1200
2000
3000
4000
NOTICE
Check that the exact amount of liquid has been poured. Per-
form few manoeuvres to check the correct rotation.
Check that there are no leaks from the circuit.
If necessary, please contact PFEIFFER for the information
about HCD liquid product.
Liquid contained
in one HCD body in Liter
0,14
0,26
0,43
0,60
1,25
2,09
2,48
4,86
7,31
8,68
19
EB 31a-23_EN
Edition: November 2021
Specifi cations subject to change
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