Emerson Bettis CBB Series - Page 14

October 2015
Service Instructions
VA001-196-30 Rev. 1
11
Section 3: Actuator Reassembly
Actuator Reassembly
Use assembly drawing part numbers VA-001-005-72 for this section.
In section 3.2 where the step indicates to “lubricate, coat or apply lubricant”, use lubricant
asidentiedinSection1step1.6forlubricatingthepartbeinginstalled.
3�2�1 Apply a coating of lubricant to the torque shaft holes located on each side of
housing (1-10).
3�2�2 Prior to installing new seals: Fit the torque shaft snap ring groove with installation
rings that come with the CBB service kits. These rings help guide the torque-shaft
through the housing and seals which will prevent seal damage. It is a good idea to
rsttakeoutbotholdseals,theninstalltheringsontotheshaft,andtheninstall
seals in housing. Once this is done, remove install rings and proceed.
3�2�3 Coat the O-ring seal (2-20) with grease upon installation.
NOTE:
The cup/lip of torque shaft seal will be installed facing inward into the housing.
3�2�4 Coat yoke (1-20) with lubricant and install into housing (1-10). Apply a generous
amount of lubricant to the slots in the arms of yoke (1-20).
3�2�5 Insert the yoke key spring (1-50), with the ends pointing down, into the slot in the
torque shaft (1-30) and place the yoke key (1-40) on top of the spring with the
tapered side outward.
WARNING: FOLLOW YOKE KEY INSTALLATION STEPS
Iftheyokekey(1-40)isinstalledincorrectlythehousingmaybedamagedwhennext
disassembly occurs. Refer to assembly drawing for correct yoke key spring and yoke
key orientation.
3�2�6 Hold the yoke key (1-40) down with your thumb; insert the torque shaft (1-30) by
gently rotating it into the housing (1-10) and yoke (1-20) on the opposite side of
the installed O-ring seal (2-20).
NOTE:
Two new retaining rings (1-60) are contained in the Bettis CBB Service Kits.
3�2�7 Installoneofthenewretainingring(1-60)andwasher(1-65)ontotheexposed
end of the torque shaft, making certain it is properly seated in the groove of
the torque shaft (1-30). Gently push and rotate the torque shaft (1-30) until
the retaining ring (1-60) is pressed against the housing (1-10). Install the other
retaining ring (1-60) and washer (1-65) to the other side of the torque shaft (1-30).
CAUTION: CHECK YOKE KEY ALIGNMENT
Rotate the torque shaft until the yoke key snaps into the yoke keyway.