Bettis P/N 127073E
Revision “A”
Page 15 of 37
3.2.41.2
G2 and G3 housing (1-10) using pipe sealant install one vent check
assembly (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 2.1.4 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).
3.3.1
Lubricate piston rod (3-40) and insert through the side of housing (1-10).
3.3.1.1 G2 thru G10 screw piston rod (3-40) onto extension rod assembly (1-50).
3.3.1.2 G01 only screw piston rod (3-40) onto guide block (1-30).
3.3.2
Torque tighten piston rod (3-40) to the lubricated torque as listed in the following table.
PISTON ROD TORQUE INFORMATION
TORQUE
(±5 % Percent)
TORQUE
(±5 % Percent)
HOUSING
MODEL
FT-lb
N-m
HOUSING
MODEL
FT-lb
N-m
G01
90
122
G5
240
325
G2
90
122
G7
240
325
G3
90
122
G8
240
325
G4
240
325
G10
240
325
