41
Seal Kit Procedures for
Air-Powered Operators
Items included in the kit:
6
4 Piston Rod Seals
4
2 Breather Vents
2 Check Balls
2 Metering Screws
2 Seal Retainers
Tools and materials needed:
Rags
Lightweight Oil
Screwdriver
7/16” and 9/16” Wrenches
Lightweight Hammer
U-cup Seals
1.Close the door and turn off the air to the operator. Note: The front piston is extended and the rear piston is down. When remounting the operator, make sure the pistons are back in the same position.
2.Disconnect the air lines from the operator.
3.Remove the operator from the track: Unscrew the two bolts holding the brackets to the
track and take the chain or belt off the sprocket on the door shaft at the top of the opening. Leave the chain or belt on the operator.
4.Lay the chain or belt and the operator down together and disconnect the chain or belt from the piston shafts by loosening the set screws in the collars, and sliding the collars off the piston shafts.
5.Unscrew the bolts on the bottom of the 5 retaining rods that run the length of the operator. You will have to keep the rods from turning by using a
6.Remove the piston from the cylinders by pushing down on the piston rods forcing the bottom cap out of the cylinder. Clean the inside of the cylinders by pushing a lightly oiled rag through it with the piston rod.
7.Remove the old
8.Put the new
9.Put everything back together. When tightening the retaining rods, make sure they are tightened equally. Put the operator back on the track remembering to extend the front piston rod and to have the rear piston rod 1/2” from bottoming out.
10.Before reconnecting the air line, inject 8 to 10 inches of 10wt,
25