RACK & PINION ACTUATORS
2R40 to 2R1750 Series
Installation & Maintenance Manual
6 October 24, 2013
www.atcontrols.com
Engineering\documents\products\IOM\IOM1003.docx
9.6 End Cap Installation:
With the pistons together, lightly grease the end cap o-rings with multi-purpose grease. Grease the
ends of the body bore and the end caps. Install the o-rings into the groove in the end caps.
Spring Return Unit
Install the correct number of springs for the desired torque output. Place the springs into the pockets
of the piston and end cap. Balance the springs across the Pistons.
10. Testing:
Using compressed air at 80psi-100psi, check the seal areas with soapy water and ensure no bubbles are
produced and that the pinion rotates smoothly over its full travel.
11. Cycling of infrequently used or stored actuators:
Actuators that are not in current use for at least a 3 month period, should be cycled a minimum of ten times.
The seal manufacturers recommend this procedure to prevent pre-set of the seals.
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