Emerson Bettis CBB Series Service Instructions Manual page 14

Section 3: Actuator Reassembly
May 2012
NOTE:
Move the o-ring seal (2-30) down the M3 jackscrew until it is next to the M3 adapter.
NOTE:
Rotate the hex nut down the M3 jackscrew until it is next to the M3 adapter.
3.2.3
3.2.4
NOTE:
The cup of torque shaft wiper seal will be installed facing down into the housing.
3.2.5
3.2.6
WARNING: YOKE KEY INSTALLATION
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.
3.2.7
NOTE:
Torque Shaft should be installed with key rotated 180 degrees opposite yoke key slot.
NOTE:
The cup of the torque shaft wiper seal again needs to be installed facing inward into the housing.
Two new retaining rings (1-60) are contained in the Bettis CBB Service Kits
11
3.2.2.8 Install hex nut (1-80) onto M3 jackscrew (1-70).
Apply a coating of lubricant to the torque shaft holes located on each side of
housing (1-10).
Coat torque shaft wiper seals (2-20) with lubricant and install in one of the grooves
located in the torque shaft bore of the housing (1-10).
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).
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.
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 torque shaft wiper seal (2-20)
When the torque shaft (1-30) is flush with the housing (1-10) push the torque
shaft (1-30) through until the empty seal groove is exposed. Install the other
torque shaft wiper seal (2-20) into the groove
Service Instructions
137465E Rev. F
Actuator Resassembly