Emerson Bettis G Series - Page 16

December 2020
Installation, Operation and Maintenance Manual
VA-DC-000-1878 Rev. 0
12
Section 2: Actuator Disassembly
Actuator Disassembly
NOTE:
Groove pins (1 - 130) will remain in housing cover (1 - 20) when housing cover is removed
from housing (1 - 10). Groove pins (1 - 130) should not be removed from housing cover
(1 - 20) unless they are damaged and require new replacements.
2.3.14 Refer to assembly drawing page 2 of 2 Detail "B". Remove guide bar (1 - 90) from
housing (1 - 10).
2.3.15 Remove top yoke pin thrust bearing (2 - 10) from top of yoke pin (1 - 80).
2.3.16 Rotate the arms of yoke (1 - 70) to the center position of housing (1 - 10).
2.3.17 Remove yoke (1 - 70) with yoke pin (1 - 80), guide block (1 - 30), two yoke/guide
block bushings (2 - 30) by lifting yoke up and out of the housing (1 - 10).
2.3.18 Remove bottom yoke pin thrust bearing (2 - 10) from inside bottom of
housing (1 - 10).
2.3.19 Remove yoke pin (1 - 80) by inserting 3/8" - 16 UNC screw into top of the yoke pin
and pull straight up and out.
2.3.20 Remove guide block (1 - 30) from between the arms of yoke (1 - 70).
2.3.21 Remove yoke/guide block bushing (2 - 30) from the top of guide block (1 - 30).
2.3.22 Remove yoke/guide block bushing (2 - 30) from the top of the lower yoke arm of
yoke (1 - 70).
NOTE:
G01 model actuators skip steps 2.3.23 through 2.3.25 and continue disassembly at
step 2.3.26.
2.3.23 Refer to assembly drawing page 2 of 2 Detail "B". Use Bettis tool part numbers
117368 (G8 / G10), 117369 (G5 / G7), 117370 (G3 / G4) or 123616 (G2) and remove
retention retainer nut assemblies (1-60) and (9-60) from guide block (1 - 30).
2.3.24 Remove rod extension assemblies (1 - 50) and (9 - 50) from guide block (1 - 30).
NOTE:
Spherical washers (1 - 40) and (9 - 40) will be removed from guide block (1 - 30) when the
extension rod assemblies are removed.
2.3.25 Remove the remaining spherical washers (1 - 40) and (9 - 40) from guide
block (1 - 30).
2.3.26 Unscrew and remove two stop screw nuts (1 - 190) from stop screws (1 - 180).
2.3.27 Unscrew and remove two stop screws (1 - 180) from front of housing (1 - 10).