Installation, Operation and Maintenance Manual
VA-DC-000-1803 Rev. 2
July 2020
25
Section 3: Actuator Reassembly
Actuator Reassembly
3.4.4 Install piston rod (3 - 40) through inner end cap (3 - 10).
NOTE:
The piston rod end with retainer grooves to be on the outboard side of inner end cap (3 - 10).
NOTE:
Piston will be torque tighten when installed into the drive module refer to Section 5,
step 5.2.5.
3.4.5 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.
3.4.5.1 Install two sets of rod T-seals (4 - 50) into the internal diameter seal
grooves of piston (3 - 30).
3.4.5.2 Install a back-up ring on each side of the T-seal.
3.4.5.3 When installing the back-up rings, do not align the skive-cuts.
3.4.5.4 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.
3.4.6 Coat one D-ring seal (4 - 60) with lubricant and install into the piston external
seal groove.
NOTE:
The at side of the D-ring seal goes down into the seal groove.
3.4.7 Install piston (3 - 30) onto piston rod (3 - 40).
NOTE:
The cast rib side of the piston is to be facing away from the outboard side of inner end cap
(3 - 10) or position piston (3 - 30) on the piston rod so that the retainer grooves are on the
outboard side of the piston.
3.4.8 Refer to assembly drawing page 2 of 2 Detail "D". Install O-ring seal (4 - 70) into the
seal groove in the outboard end of piston rod (3 - 40).
3.4.9 Install two split ring halves (3 - 50) into the outer most groove in piston rod (3 - 40)
and retain by installing the recessed area of piston (3 - 30) over the two split
halves (3 - 50).
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