12 | Baker Hughes
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Maintenance
1.0 Partial Disassembly for Plug/Seat
Insert and Plug/Seat Inspection and
Replacement
1.1 Disconnect all tubing to the Actuator. The Series 22 Pilot
block can remain attached to the Adapter Housing and
does not need to be removed for this procedure.
1.2 With the exception of the four cap screws that are
recessed into the Upper Actuator Housing, loosen and
remove the remaining cap screws that hold the Actuator
housing to the Adapter housing.
1.3 Use lifting eyes to remove the Actuator assembly by
lifting straight up. DO NOT PRY.
1.4 The adapter housing does not need to be removed.
1.5 Inspect the Seat Insert and Plug Seal for nicks, scratches
or other damage that may be visible.
1.6 If necessary, the Plug assembly can be disassembled at
this point and the Seat Insert can be replaced.
1.7 To disassemble the Plug assembly, remove the Cotter
Pin as shown in the figure below and loosen the Castle
