Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2
July 2020
21
Section 3: Actuator Reassembly
Actuator Reassembly
3.2.39
Place lock washers (1 - 170) onto hex cap screws (1 - 160).
3.2.40
Install and tighten hex cap screws (1 - 160) with lock washers through yoke cover
(1 - 150) and into housing cover (1 - 20).
3.2.41
Vent check assembly installation as follows:
3.2.41.1
G01, G2 and G3 housing (1 - 10) using pipe sealant install one vent
check assembly (13) into the front of housing (1 - 10).
3.2.41.2
G01, G2 and G3 housing cover (1 - 20) using pipe sealant install one vent
check assemble (13) into the top area of housing cover (1 - 20).
3.2.41.3
G4 through G10 housing (1 - 10) using pipe sealant install two vent
check assemblies (13) into the front of housing (1 - 10).
3.2.42 NOTE: Refer to Section 2, step 2.3.3 for correct position indicator placement.
Install position indicator (1 - 220) over the exposed shaft of position indicator
assembly (1 - 140).
3.2.43
Install stop screw nuts (1 - 190) onto stop screws (1 - 180).
3.2.44
Install O-ring (2 - 90) onto stop screws (1 - 180).
3.2.45
Install two stop screws (1 - 180) into two stop screw holes on the front of
housing (1 - 10).
3.2.46
Adjust both stop screws (1 - 180) back to settings recorded earlier in Section 2 at
step 2.3.2.
3.2.47
Tighten both stop screw nuts (1 - 190) securely.
3.3
Pneumatic Power Module Reassembly
NOTES:
1.
For early model G2 and G3 actuators with double nuts on the power module use
Section 3.4 for reassembly.
2.
Refer to Section 2, step 2.1.3 for the correct installation location for piston
rod (3 - 40).
3.
THE ACTUATOR MUST BE IN THE APPROPRIATE OVERTRAVEL POSITION. Confirm
over- travel position by observing the guide block (1 - 30) is against the inner wall of
housing (1 - 10).
4.
Refer to dwg. VA115680 for details.
3.3.1
Lubricate piston rod (3 - 40) and insert through the side of housing (1 - 10).
3.3.1.1
G2 through G10 screw piston rod (3 - 40) onto extension rod
assembly (1 - 50).
3.3.1.2
G01 screw piston rod (3 - 40) onto guide block (1 - 30).