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Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
Section 3: M18 System Fluid Filling Instructions
3.1
Double-Acting Actuator M18 System
Fluid Filling
Use either Filling Method Number 1 (steps 3.1.2) or Filling Method Number 2
(steps 3.1.3). Method number 1 is the best, most efficient and the recommended method.
3.1.1
3.1.2
NOTE:
If a pressure pump is not available go to step 3.1.3 (method number 2) for the manual field
service filling procedure.
M18 System Fluid Filling Instructions
Actuator position as follows:
3.1.1.1
Pneumatic and Hydraulic T-Series Actuators:
Apply pneumatic or hydraulic pressure to the inlet port located in the
outer end cap of the actuators power cylinder, placing the actuator in
the counterclockwise (CCW) position and proceed to step 3.1.2.
3.1.1.2
Hydraulic G-Series Actuators:
Apply pneumatic or hydraulic pressure to the inlet port located in
the inner end cap of the actuators power module (cylinder), placing
the actuator in the counterclockwise (CCW) position and proceed to
step 3.1.2.
3.1.1.3
Pneumatic G and HD-Series Actuators:
Apply pneumatic pressure to the inlet port located in the inner end cap
of the actuators power module (cylinder), placing the actuator in the
clockwise (CW) position and proceed to step 3.1.2.
Filling Method Number 1
Filling of the M18 Manual Hydraulic Override System is best accomplished using a
pressure pump.
3.1.2.1
Shut off and exhaust the operating media from the actuator's
power cylinder.
3.1.2.2
Remove the bleed plugs from the following locations:
3.1.2.2.1
G-Series Actuators remove plug from the top of the outer
and inner end caps of the hydraulic override cylinder.
3.1.2.2.2
T-Series Actuators remove pipe plugs from the top area
located on the outer and inner end caps of the hydraulic
override cylinder.
3.1.2.2.3
HD-Series Actuators remove pipe plug from the top area on
the outer end caps of the hydraulic override cylinder and the
cylinder adapter.
Section 3: M18 System Fluid Filling Instructions
April 2021
5
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