Emerson Bettis G2 Series User Manual

Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2 July 2020
23
Section 3: Actuator Reassembly
Actuator Reassembly
3.3.11.1 Install two sets of rod T-seals (4 - 50) into the internal diameter seal
grooves of piston (3 - 30).
3.3.11.2 Install a back-up ring on each side of the T-seal.
3.3.11.3 When installing the back-up rings, do not align the skive-cuts.
3.3.11.4 If the back-up rings are too long and the rings overlap beyond the
skive- cuts, then the rings must be trimmed with a razor sharp instrument.
3.3.12 Install two split ring halves (3 - 50) into the inner most groove in piston rod (3 - 40)
and retain by installing the recessed area of piston (3 - 30) onto the piston rod and
over the two split ring halves (3 - 50).
3.3.13 Install two split ring halves (3 - 50) into the piston rod, in front of the piston
installed in the previous step, and retain with retainer ring (3 - 60).
3.3.14 Install one O-ring seal (4 - 40) onto the outer diameter seal groove of inner end
cap (3 - 10).
3.3.15 Coat one D-ring seal (4 - 60) with lubricant and install into the piston external
seal groove.
NOTE:
The at side of the D-ring seal go down into the seal groove.
3.3.16 Coat two tie bars (3 - 20) with lubricant and install by carefully pushing tie bars
through piston (3 - 30) and rod T-seal (4 - 50).
3.3.17 Screw tie bars (3 - 20) into inner end cap (3 - 10) and tighten until the threads
bottom out.
3.3.18 Refer to assembly drawing page 2 of 2 Detail "E". Coat two O-ring seals (4 - 80) with
lubricant and install into outer end cap (3 - 80).
3.3.19 Apply lubricant to one O-ring seal (4 - 40) and install into the outer diameter
O-ring groove of outer end cap (3 - 80).
3.3.20 Apply lubricant to the bore of cylinder (3 - 70).
!
CAUTION
If needed, when installing the cylinder, hammer on the end of the cylinder only with a
nonmetallic object.
3.3.21 Install lubricated cylinder (3 - 70) over piston (3 - 30) and onto inner end cap
(3 - 10). When installing the cylinder over the piston seal tilt cylinder 15° to 30° to
piston rod.
3.3.22 Install outer end cap (3 - 80) over tie bars (3 -20) and into cylinder (3 - 70).
NOTE:
The pressure inlet port should be positioned in the same position as recorded in Section 2,
step 2.2.1.

Emerson Bettis G2 Series Specifications

General

Brand	Emerson
Model	Bettis G2 Series
Category	Controller
Language	English