Emerson Bettis G2 Series Disassembly And Reassembly

October 2015
Service Instructions
127072E Rev. C
15
Section 3: Actuator Reassembly
Actuator Reassembly
3�2�30 Torque tighten hex cap screws (1-110) until a nal lubricated torque, as listed in
the following table, has been achieved.
Table 2� Housing Cover Screw Quantity and Torque
Model Qty�
TORQUE (±5%)
Model Qty�
TORQUE (±5%)
Lbf-ft� N-m Lbf-ft� N-m
G01 4 40 54 G5 8 100 136
G2 6 40 54 G7 8 100 136
G3 8 40 54 G8 12 100 136
G4 8 40 54 G10 16 100 136
NOTE:
Complete step 3.2.32 on G5, for G10 model actuators. For G01 through G4 model
actuators skip step 3.2.32 and proceed to step 3.2.33.
3�2�31 On G5 through G10 models:
3�2�31�1 Place lockwashers (1-115) onto hex cap screws (1-120).
NOTE:
Hex cap screws (1-120) are only used as "hole" llers and serve to protect threads from
environment.
3�2�32 Install and tighten hex cap screws (1-120) with lockwashers (1-115).
3�2�33 Install thrust bearing (2-110) onto position indicator (1-140).
3�2�34 Install O-ring seal (2-100) onto position indicator (1-140).
3�2�35 Install upper bearing (2-120) into yoke cover (1-150).
3�2�36 Install rod wiper (2-80) into yoke cover (1-150).
3�2�37 Install O-ring seal (2-70) into yoke cover (1-150).
3�2�38 Install yoke cover (1-150) onto housing cover (1-20) and over position indicator
assembly (1-140).
NOTE:
During yoke cover installation be careful not to damage O-ring seal (2-70) and rod wiper (2-80).
3�2�39 Place lockwashers (1-170) onto hex cap screws (1-160).
3�2�40 Install and tighten hex cap screws (1-160) with lockwashers through yoke cover
(1-150) and into housing cover (1-20).
3�2�41 Vent check assembly installation as follows:
3�2�41�1 For 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 For 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 For G4 through G10 housing (1-10) using pipe sealant install two vent
check assemblies (13) into the front of housing (1-10).

Emerson Bettis G2 Series Specifications

General

Brand	Emerson
Model	Bettis G2 Series
Category	Controller
Language	English