October 2015
Service Instructions
127072E Rev. C
28
Section 5: Module Removal and Installation
Module Removal and Installation
NOTE:
Review Section 2.1 General Disassembly before proceeding with the hydraulic power mod-
ule disassembly.
Use a means of capturing the hydraulic uid that will be lost during the following steps. Use
a bucket, tub, and large container, etc.
5�5�1 Remove O-ring plug (3-120) from outer end cap (3-80).
5�5�2 Using a male square drive extension, go through outer end cap (3-80) and unscrew
piston rod (3-40) from extension rod assembly (1-50).
WARNING: USE APPROPRIATE LIFTING EQUIPMENT
Use suitable lifting equipment to support the cylinder assembly.
5�5�3 Remove hex cap screws (3-115), with lockwashers (3-110), from inner end cap (3-10).
5�5�4 Remove hex nuts (3-105) from hex cap screws (3-100).
5�5�5 Remove hydraulic power module from actuator housing (1-10).
5�6 Hydraulic Power Module Installation
NOTE:
Review section 3.1 General Reassembly before proceeding with hydraulic power module installation.
5�6�1 Check to verify if O-ring seal (4-90) is properly seated in its seal groove located on
the housing side of inner end cap (3-10).
5�6�2 Using lifting equipment move the power module up to housing (1-10) and align
piston rod (3-40) with extension rod assembly (1-50).
5�6�3 Using a male square drive extension, go through outer end cap (3-80) and screw
piston rod (3-40) into extension rod assembly (1-50).
WARNING: DO NOT CROSS-THREAD RODS
When screwing piston rod into extension rod assembly (1-50) ensure that the piston rod
and extension rod assembly threads do not cross thread.
5�6�4 Torque tighten piston rod (3-40) to 240 foot pounds lubricated.
5�6�5 Install lock washers (3-110) onto hex cap screws (3-115).
5�6�6 Install hex cap screws (3-115), with lockwashers (3-110), through inner end cap
(3-10) and screw into housing (1-10).
5�6�7 Install lock washers (3-110) onto hex cap screws (3-100).
5�6�8 Install hex cap screws (3-100), with lockwashers (3-110), through inner end cap
(3-10) and housing (1-10).
5�6�9 Install and tighten hex nuts (3-105) onto hex cap screws (3-100).
5�6�10 Using pipe dope, install pipe plug (3-120) into outer end cap (3-80).
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