October 2015
Service Instructions
127072E Rev. C
19
Section 3: Actuator Reassembly
Actuator Reassembly
NOTE:
The lip of Polypak seal (8-30) will face toward the hydraulic override end cap when installed
in the hydraulic cylinder assembly.
3�5�2
Install rod bushing (8-20) into hydraulic cylinder assembly (7-10).
3�5�3
Install rod wiper (8-10) into hydraulic cylinder assembly (7-10).
3�5�4
Install two split ring halves (7-30) into the inner most groove in piston rod (7-20)
and retain by installing retainer ring (7-40) onto the split ring halves.
3�5�5
Apply hydraulic fluid to O-ring seal (8-50) and install it into the seal groove located
between the two split ring grooves on the piston rod (7-20).
3�5�6
Install the piston (7-50) onto the piston rod (7-20) and up against the split rings
install as instructed in step 3.5.4.
3�5�7
Install two split ring halves (7-30) into the outboard groove in piston rod (7-20)
and retain by installing retainer ring (7-40) onto the split ring halves.
3�5�8
Install Polypak seal (8-60) into outer diameter seal groove of piston (7-50).
NOTE:
The lip of Polypak seal (8-60) should face toward the hydraulic override outer end cap (7-
70) when installed in the hydraulic cylinder assembly.
3�5�9
Install piston bearing (8-40) into outer diameter bearing groove of piston (7-50).
3�5�10
Install O-ring seal (8-80) into inner diameter seal groove located in the piston (7-50).
3�5�11
Use pipe dope on the threads and install pipe plug (7-110) into the vent tube hole
in the inboard end of the hydraulic cylinder assembly (7-10).
3�5�12
Install vent tube (7-60) into the hydraulic cylinder assembly inboard end.
3�5�13
Install the assembled piston rod (7-20) with piston (7-50) into the open end of the
hydraulic cylinder assembly and install the piston over the vent tube (7-60).
3�5�14
Install O-ring seal (8-90) into the vent tube port located in the outer end cap (7-70).
3�5�15
Install O-ring seal (8-70) into the O-ring groove located on the inner diameter of
the hydraulic cylinder assembly flange opening.
3�5�16
Install the outer end cap (7-70) assembled piston rod (7-20) with piston (7-50) onto
the open end of the hydraulic cylinder assembly and over the vent tube (7-60).
3�5�17
Install lockwashers (7-90) onto hex cap screws (7-80).
3�5�18
Install and tighten hex cap screws (7-80), with lockwashers (7-90) through outer
end cap (7-70) and into hydraulic cylinder assembly.
NOTE:
For M11 hydraulic override cylinder installations refer to Section 5 step 5.2.
