Bettis CBAX30 Series

Bettis P/N 137462E
Revision "A”
Page 12 of 18
3.3.10 Carefully slide piston assembly (4-50) along center bar assembly (8-10) until the yoke
pin engages the slots of yoke (1-20).
CAUTION: Check to determine that both bushings (4-80) are installed between the
arms of yoke (1-20) and the piston assembly (4-50). Refer to Figure 1.
NOTE: While holding the center bar assembly flush against the housing adapter (6-10), push
piston assembly (4-50) into housing (1-10) as far as the piston will travel.
3.3.11 Apply a coating of lubricant to entire bore of cylinder (4-10).
3.3.12 Cylinder (4-10) installation:
3.3.12.1 CBA830, CBA930 and CBA1030 models install the lubricated cylinder (4-10)
over the piston and up-against the o-ring seal on the stepped diameter flange of
cylinder adapter (4-15).
3.3.12.2 CBA730 models install the lubricated cylinder (4-10) over the piston and up-
against the o-ring seal on the flange of housing (1-10).
3.3.13 Coat o-ring seal (5-20) with lubricant and install into inner diameter seal groove located
in the center bar hole of end cap (4-20).
NOTE: Actuators equipped with an end cap M3 jackscrew (4-30) pre-install M3 into end cap
(4-20) per step 3.3.14 and then install pre-assembled end cap into cylinder (4-10) per
step 3.3.15. Actuators equipped with housing adapter ES or stop screw (4-30) skip step
3.3.15 and continue assembly at step 3.3.17.
3.3.14 M3 jackscrew installation to end cap (4-20).
3.3.14.1 Apply a coating of lubricant to outer diameter and inner diameter threads of M3
jackscrew adapter (4-55).
3.3.14.2 Coat o-ring seal (5-65) with lubricant and install into outer diameter seal groove
located in the M3 jackscrew adapter (4-55).
3.3.14.3 Apply a light coating of lubricant to the threads of M3 jackscrew (4-30).
3.3.14.4 Install and rotate the M3 jackscrew (4-30) into M3 jackscrew adapter (4-55).
NOTE: Rotate the M3 jackscrew into the adapter until the inboard end of the
jackscrew is up against the adapter.
3.3.14.5 Install M3 jackscrew adapter (4-55) with M3 jackscrew (4-30) into end cap
(4-20).
3.3.14.6 Install retainer ring (5-60) into exposed outer diameter groove in M3 jackscrew
adapter (4-55).
3.3.14.7 Install o-ring seal (5-30) onto M3 jackscrew (4-30). NOTE: Move the o-ring seal
(5-30) down the M3 jackscrew until it is next to the M3 jackscrew adapter.