October 2015
Service Instructions
VA001-196-30 Rev. 1
13
Section 3: Actuator Reassembly
Actuator Reassembly
NOTE:
Position the end cap (4-20) so that the inlet port is at the bottom and the ES or stop screw
(4-30) is at the top.
WARNING: FOLLOW END CAP INSTALLATION STEPS
If step 3.3.24 is not completed as described, the center bar O-ring seals (5-20) may become
a source of pressure leakage and cause the actuator to fail.
3�2�25
Install the second hex nut (8-20) onto the cylinder end of center bar (8-10). Adjust
the two hex nuts (8-20) such that the approximate same number of threads is
exposed on the ends of the center bar (8-10).
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 main-
tain the position as described in step 3.2.23.
3�2�26
Tighten center bar (8-10) to the proper torque as specified in the following chart.
Table 3�
Tightening Torque Center Bar (1)
CBB Actuator Model
Maximum Torque
Lbf-in�
N-m
315
55
75
420 AND 520
100
136
525 AND 725
130
176
3�2�27
If removed, install ES or stop screw (4-30) into end cap (4-20).
3�2�28
Install O-ring seal (5-30) onto the ES or stop screw (4-30). Install the O-ring seal
against the end cap (4-20).
3�2�29
Install new washer (4-90) onto the ES or stop screw (4-30). Install the washer
against the end cap (4-20).
3�2�30
Install hex nut (4-40) onto stop screw (4-30)
NOTE:
Leave hex nut hand tight.
3�2�31
If removed install ES or stop screw (1-70) into housing (1-10).
3�2�32
Install O-ring seal (2-30) and CSK washer (2-35) onto the ES or stop screw (1-70).
Install O-ring seal against the housing (1-10).
3�2�33
Install hex nut (1-80) onto ES or stop screw (1-70). Leave hex nut hand tight.
3�2�34
Adjust both stop screws or ES (1-70) and (4-30) back to setting recorded in Section
2 step 2.1.2 under general disassembly. Tighten both hex nuts (4-40) and (1-80)
securely, while holding the ES or stop screws in place/position.
