Emerson Bettis RGS Q-Series Installation, Operation And Maintenance Manual page 24

Double-acting actuators
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Section 4: Maintenance
November 2015
Figure 22
Single Cylinder Models:
Dual Cylinder Models:
* Both pistons should contact the body simultaneously. If they do not, remove piston
assemblies, reset shaft into correct position and try again.
General Reassembly (continued)
17.
18.
19.
20.
Figure 23
Wiper Ring Groove
O-ring Groove
21
Installation, Operation and Maintenance Manual
a.
Insert the piston and engage rack teeth with shaft teeth after ensuring
proper alignment.
b.
Press inward on piston until the point of refusal.
a.
Simultaneously insert the pistons and align teeth on racks and shafts.
b.
Simultaneously press both pistons into the body engaging the rack and
shaft teeth until the point of refusal.
Place cylinder seal(s) into cylinder seal groove(s) on body.
Lightly lubricate wiper and piston O-ring grooves.
Lubricate the wiper and piston O-ring(s) and place them into their respective
grooves on piston(s).
Follow Section 4.4, Steps 8 to 13.
RGS011110-1 Rev. 0
Maintenance

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