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
asidentified 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
first 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.
