AMOT 02GGH, Installation, Operation And Maintenance Manual

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Pneumatic Actuator 82046L
Rev 5 – MAY 2019 OMMGGP00185
10. Reassembly of the pistons:
Install the piston bearings (7), piston rack bearing strips (6) and piston O-ring
seals (13) on the pistons. Ensure all these parts are kept in place during
assembly. See 4.4.3 if actuation reversal is required.
Fig 21 Piston Re-assembly
Align the pinion (see Fig 22) so that the teeth on the pinion will pick up the
pistons rack teeth when turning the pinion. Note the position of the pinion top
slot and the cam on the pinion top: For standard or Spring-to-Close: Assembly
Code CW
For reverse or Spring-to-Open: Assembly Code CC
Slightly push the pinion inward to engage with the pinion. Ensure that smooth
movement and 90-degree operation can occur without moving the pistons out
of the actuator body.
For larger pistons, use a rubber mallet and slightly hitting the pistons inward
to engage with the pinion.
When the pistons are moved 90° inwards (see Fig 22), check that the pinion
slot on the pinion top is: Perpendicular to the length centre line of the house
for assembly code CW.
In line to the length centre line of the house for assembly code CC.
If not, turn pinion to move the pistons outward until they disengage from the
pinion. Shift one tooth of the pinion, reassemble and check again.
6
7
13
3
6
13
7
3