Emerson Bettis CBB Series - Page 22

October 2015
Service Instructions
VA001-196-30 Rev. 1
19
Section 3: Actuator Reassembly
Actuator Reassembly
WARNING: DO NOT ALLOW END CAP TO ROTATE
Do not allow end cap (4-20) to rotate during center bar tightening. The end cap must
maintain the position as described in step 3.3.27. M3 jackscrew must be installed to be in
alignment with the target located on the piston assembly (4-50).
3�3�30 Tightencenterbarhexnuts(8-20)tothepropertorqueasspeciedinthe
following chart:
Table 4� Tightening Torque Center Bar (2)
CBB Actuator Model
Maximum Torque
Lbf-in� N-m
315 55 75
420 AND 520 100 136
525 AND 725 130 176
3�3�31 Adjust both M3 jackscrews (4-30) and (1-70) back to setting recorded in Section 2
step2.1.2underGeneralDisassembly.TightenbothM3jackscrewhexnuts(4-40)
and
(1-80) securely, while holding M3 jackscrews (1-70).
3�3�32 M3hexdrivehuborhandwheelinstallationasfollows:
3�3�32�1 Installhexdrivehub(12-10)orhandwheel(12-10)ontoM3jackscrews
(4-30) and (1-70) and align the “hole” of the drive hub with the “hole”
located in the outboard end of M3 jackscrews (4-30) and (1-70).
3�3�32�2 Installretainerring(12-30)andgroovepin(12-20)intothehexdrivehub
(12-10) or hand wheel (12-10).