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Service Instructions
133893 Rev. C
Section 2: Actuator Disassembly
2�1
General Disassembly
WARNING: CHECK FOR DANGEROUS GAS AND LIQUIDS
It is very possible, that the actuator may contain a dangerous gas such as (Sour gas/H2S,
Oxygen, Nitrogen, etc.) and/or liquids such as (Condense, Descalers, Petroleum bases,
etc.). Ensure that all proper measures have been taken to prevent dangerous exposure or
release of these types of residues before commencing any work.
2.1.1
2.1.2
2.1.3
CAUTION: CONTAIN HYDRAULIC FLUID
Using some means to contain hydraulic fluid as the tubing (piping) is disconnect
from the GTO outer end cap (7-80) and inner end cap (7-10).
2.1.4
2.1.5
2�2
GTD Gas Cylinder Disassembly
NOTE:
Review Section 2 notes and steps 2.1.1 through 2.1.5 General Disassembly before
proceeding with GTD gas cylinder disassembly.
WARNING: DISCONNECT HYDRAULIC PRESSURE
If not already removed disconnect all operating pressure from actuator GTD gas cylinder.
2.2.1
2.2.2
Actuator Disassembly
Section 2 - Actuator Disassembly is written to either completely disassemble the
entire actuator or can be used to disassemble individual actuator assemblies as
needed (i.e., GTD Gas Cylinder, Drive Module or GTO Oil Cylinder).
The GTD gas cylinder is to be disassembled while still attached to the Drive
Module.
The GTO oil cylinder can be disassembled while still attached to the Drive Module
or it can be removed from the Drive Module and disassembled separate to the
actuator (refer to Section 5 – Module, Cylinder Removal And Installation).
Disconnect all hydraulic fluid lines to GTO oil cylinder outer end cap (7-80) and
inner end cap (7-10). Drain as much of the hydraulic fluid as possible.
To ensure correct re-assembly; that is, with GTO oil cylinder or GTD gas cylinder
on same end of Drive Module as was, mark or tag right (or left) and mark mating
surfaces.
Mark and record location of the ports on outer end cap (3-80) and
inner end cap (3-10).
The setting of stop screw (3-180) should be checked and setting recorded before
loosened or removed.
Section 2: Actuator Disassembly
January 2013
4
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