September 2015
Installation, Operation and Maintenance Manual
RGS011110-1 Rev. 0
7
Section 4: Travel Adjustment
Travel Adjustment
Section 4: Travel Adjustment
4�1
Single-Cylinder Types (Sizes 03, 04, 07 and 12)
•
Travel adjustment screws are located on the end cap and the body.
•
Hex nuts are provided with relief for a sealing O-ring that is forced into the
screw threads when tightened, thereby preventing loss of pressure.
•
Loosen the hex nuts before attempting to adjust the screws.
•
Clockwise screw rotation reduces actuator travel, counterclockwise rotation
increases travel.
•
The end cap screw will be more difficult to adjust as the spring is pushing the
piston against the screw end. If necessary, apply pressure to the end cap port to
relieve the piston force.
•
When travel adjustment is complete, retighten the hex nuts to seal the threads
and to secure the screw position.
4�2
Double-Cylinder Types (Sizes 05, 10 and 14)
•
Travel adjustment screws are located on the end caps and the body such that
each piston’s travel is stopped independently but simultaneously.
•
The end cap stops are readily adjusted but the body stops are for factory assem-
bly adjustment and not intended for user adjustment unless absolutely neces-
sary, as they require removal of the cylinders and springpaq.
4�3
Outward Travel Adjustment
•
End caps stops include hex nuts which are provided with relief for a sealing
O-ring that is forced into the screw threads when tightened, thereby prevent-
ing loss of pressure.
•
Loosen both hex nuts before attempting to adjust the end cap screws.
•
Back off (turn counterclockwise) one of the stop screws, using the other to set travel.
•
Clockwise screw rotation reduces actuator travel, counterclockwise rotation
increases travel.
•
The screw may be difficult to adjust as the spring is pushing the piston against
the screw. If necessary, apply air pressure to the end cap port to relieve the
piston force.
•
When travel adjustment is complete using the one screw, turn the other screw
clockwise until contact is made with the piston, then add 1/4 turn.
•
Retighten the hex nuts to seal the threads and to secure the screw positions.
