BIFFI FCB Series, Руководство пользователя

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March 2022
Service Instructions
VCIOM-15313-EN Rev. 1
14
Section 3: Actuator Reassembly
Actuator Reassembly
3.2.9 Rotate the torque shaft (1-30) so that the arms of yoke (1-20) point outward.
3.2.10 Coat O-ring seal (5-20) with lubricant and install into inner diameter seal groove
located in the center bar hole of housing (1-10).
3.2.11 Coat entire length of center bar (8-10) with lubricant including the threads.
3.2.12 Insert center bar assembly (8-10) into the center hole of housing (1-10). Slide
center bar assembly through housing until center bar assembly nut is flush against
the housing (1-10).
!
WARNING
Care should be taken during installation of center bar assembly so as to not scratch it.
3.2.13 Recoat center bar assembly (8-10) with lubricant.
3.2.14 Coat one O-ring seal (5-10) with lubricant and install onto outer diameter flange
located on housing adapter end of housing (1-10).
3.2.15 For actuators equipped with cylinder adapter (4-15), models FCBB415-SR,
FCBB520-SR and FCBB725-SR, do steps 3.2.15.1 and 3.2.15.2.
3.2.15.1 Install cylinder adapter (4-15) onto housing flange, with the stepped outer
diameter, of cylinder adapter (4-15), facing away from housing (1-10).
3.2.15.2 Install one O-ring seal (5-15) onto stepped diameter of cylinder
adapter (4-15).
3.3 Spring Cylinder Reassembly
3.3.1 Coat piston (4-50) outer diameter seal groove, inner diameter seal groove, head of
piston and exposed ends of yoke pin with lubricant.
3.3.2 Coat O-ring seal (5-20) with lubricant and install in the internal seal groove in the
head of piston (4-50).
3.3.3 Coat seal (5-40) with lubricant and install into outer diameter seal groove of piston
(4-50). The piston seal will fit very loosely in the outer diameter seal groove.
3.3.4 Install bushing (4-80) between the two arms of yoke (1-20).
3.3.5 With the piston head facing away from housing (1-10) and with yoke pin up,
install piston (4-50) onto center bar assembly (8-10).
3.3.6 Carefully slide piston (4-50) along center bar (8-10) until yoke pin engages the
yoke slots.
NOTE:
While holding the center bar assembly flush against the housing, push piston (4-50) into
housing (1-10) as far as the piston will go.
3.3.7 Apply a coating of lubricant to entire bore of spring cylinder (4-10).
3.3.8 Spring cylinder installation:
3.3.8.1 For FCBB415-SR, FCBB520-SR and FCBB725-SR models install the
lubricated spring cylinder (4-10) over the piston and up against the
O-ring seal on the stepped diameter flange of cylinder adapter (4-15).