December 2020
Installation, Operation and Maintenance Manual
VA-DC-000-1878 Rev. 0
22
Section 3: Actuator Reassembly
Actuator Reassembly
3.3.2
Torque tighten piston rod (3 - 40) to the lubricated torque as listed in Table 3.
Table 3.
Piston Rod Torque Information
Housing
Model
Torque (±5%)
Housing
Model
Torque (±5%)
lb-ft
Nm
lb-ft
Nm
G01
90
122
G5
240
325
G2
90
122
G7
240
325
G3
90
122
G8
240
325
G4
240
325
G10
240
325
!
CAUTION
Polypak seal facing piston side. Install the Polypak seal with energizer ring facing piston side
of inner end cap (3 - 10).
3.3.3
Install one O-ring seal (4 - 90) into seal groove located on the inboard face of inner
end cap (3 - 10).
3.3.4
Install inner end cap (3 - 10) on to housing (1 - 10).
NOTE:
The pressure inlet port should be positioned in the same position as recorded in
Section 2.2, step 2.2.1.
3.3.5
Place lock washers (3 - 110) onto hex cap screws (3 - 100).
3.3.6
Install hex cap screws (3 - 100), with lock washers, through housing (1 - 10) and
into inner end cap (3 - 10).
3.3.7
Refer to assembly drawing page 2 of 2 Detail "D". Install one O-ring seal (4 - 70)
into the seal groove in piston rod (3 - 40).
3.3.8
Apply lubricant to two sets of rod T-seal components (4 - 50).
NOTE:
The T-seal is composed of one rubber seal and two split skive-cut back-up rings.
3.3.8.1
Install two sets of rod T-seals (4-50) into the internal diameter seal
grooves of piston (3-30).
3.3.8.2
Install a back-up ring on each side of the T-seal.
3.3.8.3
When installing the back-up rings, do not align the skive-cuts.
3.3.8.4
If the back-up rings are too long and the rings overlap beyond the
skive-cuts, then the rings must be trimmed with a razor-sharp instrument.
