Emerson Bettis G2 Series User Manual

July 2020
Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2
22
Section 3: Actuator Reassembly
Actuator Reassembly
3.3.3 Refer to assembly drawing page 2 of 2 Detail "C". Install one rod wiper (4 - 10) into
inner end cap (3 - 10).
3.3.4 Install one rod bushing (4 - 20) into inner end cap (3 - 10).
3.3.5 Coat one Polypak seal (4 - 30) with lubricant and install, lip rst, into inner end
cap (3 - 10).
!
CAUTION
Polypak seal facing piston side. Install the Polypak seal with energizer ring facing outboard
side (away from housing).
3.3.6 Install one o-ring seal (4 - 90) into seal groove located on the inboard face of
inner end cap (3 - 10).
3.3.7 Install inner end cap (3 - 10) on to housing (1 - 10).
NOTE:
The pressure inlet port should be positioned in the same position as recorded in
Section 2.2, step 2.2.1.
3.3.8 Place lock washers (3 - 110) onto hex cap screws (3 - 100).
3.3.9 Install hex cap screws (3 - 100), with lock washers, through housing (1 - 10) and
into inner end cap (3 - 10).
3.3.10 Refer to assembly drawing page 2 of 2 Detail "D". Install one O-ring seal (4 - 70)
into the seal groove in piston rod (3 - 40).
3.3.11 Apply lubricant to two sets of rod T-seal components (4 - 50).
NOTE:
The T-seal is composed of one rubber seal and two split skive-cut back-up rings.
3.3.2 Torque tighten piston rod (3 - 40) to the lubricated torque as listed in the
following Table.
Table 3. Piston Rod Torque Information
Housing
Model
Torque (±5%)
Housing
Model
Torque (±5%)
lb-ft Nm lb-ft Nm
G01 50 122 G5 240 325
G2 90 122 G7 240 325
G3 90 122 G8 240 325
G4 240 325 G10 240 325

Emerson Bettis G2 Series Specifications

General

Brand	Emerson
Model	Bettis G2 Series
Category	Controller
Language	English