Emerson BETTIS G10 Series Service Instructions Manual page 14

Section 2: Actuator Disassembly
October 2015
2�4�8
2�4�9
2�4�10 Remove hex cap screws (1-110), with lockwashers (1-115) or with lockwashers
NOTE:
Steps 2.4.11 and 2.4.12 are used only on G7, G8 and G10 drive modules. Drive modules
G01, G2, G3, G4 and G5 will skip steps 2.4.11 and 2.4.12 and continue with step 2.4.13.
2�4�11 Remove hex cap screws (1-120), with lockwashers (1-115), from housing cover (1-20).
2�4�12 Using hex cap screws (1-110), install into holes vacated by hex cap screws (1-120).
NOTE:
G01, G2, G3 and G4 model housing covers (1-20) will have cast tabs for placing prying tools
to aid in cover removal.
2�4�13 Remove housing cover (1-20) from housing (1-10).
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�4�14 Refer to assembly drawing page 2 of 2 Detail "B". Remove guide bar (1-90) from
2�4�15 Remove top yoke pin thrust bearing (2-10) from the top of the yoke pin (1-80).
2�4�16 Rotate the arms of yoke (1-70) to the center position of housing (1-10).
2�4�17 Remove yoke (1-70) with yoke pin (1-80), guide block (1-30), two yoke/guide
2�4�18 Remove bottom yoke pin thrust bearing (2-10) from inside bottom of housing (1-10).
2�4�19 Remove yoke pin (1-80) by inserting 3/8" 16 UNC screw into top of the yoke pin
2�4�20 Remove guide block (1-30) from between the arms of yoke (1-70).
2�4�21 Remove yoke/guide block bushing (2-30) from top of guide block (1-30).
2�4�22 Remove yoke/guide block bushing (2-30) from the top of the lower yoke arm of
NOTE:
For G01 model actuators skip steps 2.4.23 through 2.4.25 and continue disassembly at
step 2.4.26.
10
Remove position indicator assembly (1-140) from top of yoke (1-70).
Remove spring pin (1-100) from top of yoke (1-70).
(1-170), from housing cover (1-20).
Use these hex cap screws to jack the housing cover up for removal. Alternately rotate
the hex cap screw clockwise until housing cover (1-20) is clear of housing (1-10).
housing (1-10).
block bushings (2-30) and extension rod assemblies (1-50) and (9-50), by lifting
yoke up and out of the housing (1-10).
and pull straight up and out.
yoke (1-70).
Service Instructions
124842E Rev. C
Actuator Disassembly