Emerson Bettis CBB Series - Section 3: Actuator Reassembly; General Reassembly Preparation; Model-Specific Reassembly Steps

October 2015
Service Instructions
VA001-196-30 Rev. 1
10
Section 3: Actuator Reassembly
Actuator Reassembly
Section 3: Actuator Reassembly
3�1 General Reassembly
CAUTION: CHECK SHELF LIFE OF SEALS
Onlynewsealsthatarestillwithinthesealsexpectantshelflifeshouldbeinstalledintothe
actuator being refurbished.
3�1�1 Remove and discard all old seals and gaskets.
3�1�2 All parts should be cleaned to remove all dirt and other foreign material prior
to inspection.
3�1�3 Allpartsshouldbethoroughlyinspectedforexcessivewear,stresscracking,
galling and pitting. Attention should be directed to threads, sealing surfaces
and areas that will be subjected to sliding or rotating motion. Sealing surfaces of
the cylinder, torque shaft and center bar must be free of deep scratches, pitting,
corrosionandblisteringorakingcoating.TherearetwoO-ringsonthetorque
shaftandtwoextraO-ringsbeneaththewashersonthehousing.Theseitems
MUST be replaced upon reassembly.
CAUTION: REPLACE WITH NEW PARTS
Actuatorpartsthatreectanyoftheabovelistedcharacteristicsmayneedreplacement
with new parts.
3�1�4 Installation Lubrication Instructions:Usethecorrectlubricationasdened
in Section 1 step 1.6.
3�1�4�1 Before installation, lightly coat with approved grease, all moving parts.
3�1�4�2 Lightly coat all seals with lubricant before installing into seal grooves.
3�1�5 Reassemble the Actuator Models per the Following Listing:
3�1�5�1 Reassemble the following models per steps 3.2: CBB315/420/520/525
and CBB725.
3�1�5�2 Reassemble the following models per steps 3.3: CBB315-M3, 315-M3HW,
420-M3, 520-M3, 525-M3 and CBB725-M3 (also included M3 jackscrew
with hand wheels i.e. M3HW).
3�2 Actuator Reassembly per CBB Models Listed in
Step 3�1�5�1
NOTE:
Review Section 3 steps 3.1.1 through 3.1.5 before proceeding with actuator reassembly.
The following steps used to reassemble the following models: CBB315, 420, 520, 525 and 725.