April 2016
Installation, Operation and Maintenance Manual
RGS011110-2 Rev. 0
11
Section 4: Maintenance
Maintenance
4.
Remove the end cap. Be careful not to lose the cylinder seal located on the
internal side of the end cap.
Figure 7
5.
Remove the cylinder. Be careful not to damage the internal surface of the
cylinder as this will compromise the piston’s ability to seal.
6.
Replace the piston O-ring and wiper ring as needed. Be sure to lubricate the new
O-ring and wiper ring with the correct Bettis approved lubricant if they are
replaced.
7.
Inspect the piston bolt for any corrosion or wear (pitting, cracking). If excessive
corrosion or wear is apparent, a new actuator or actuator components may
be necessary.
Figure 8
Piston O-ring
Wiper Ring
Piston Bolt
8.
Lubricate the internal surface of the cylinder with a light coat of the correct
Bettis approved lubricant and slide the cylinder back over the piston and into the
cylinder seal groove of the base plate, taking care not to pinch the piston O-ring.
9.
Place the end cap back over the tie rods. Be sure that the cylinder is seated
in the cylinder seal groove of the end cap with the cylinder seal still in place
between the cylinder and the end cap.
