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OPERATING
BETTCHER
AIRSHIRZ
®
INSTRUCTIONS
INDUSTRIES, INC. Rev. September 24, 2016
Page 65
9.4.13.1 Single Power Cylinder Disassembly & Repair (Continued)
Pull power cylinder rod fully outward and thoroughly clean its surface.
Remove the four (4) flat head screws from the side of the power cylinder.
Temporarily put a clevis pin into the rod bearing to act as a gripping handle. Be sure to work over
a table to catch loose parts. While holding the body of the power cylinder in one hand, pull
outward on the rod with other hand until the front end of the power cylinder comes out.
Never
Grasp Rod with a Tool as Any Nicks Will Destroy it
!
Set aside clevis pin and the wear strip which fell out of rear piston groove.
Further Disassembly Is Recommended Only As Needed.
Clean the rod and make sure it is free of dirt or burrs. Check that there are no sharp edges at the
cross-hole. (If the cross-hole edges are sharp, the piston will need to be removed from the rod, so
the rod can be pulled out of the base from the front. Otherwise, the lip seal may be damaged).
Apply a thin coat of Bettcher
®
Max-Z-Lube, then slowly slide it and the piston, out of the base.
Examine all seals:
•
O-rings with a wide flat band, pinch marks, cracks or nicks should be replaced. Remove
defective O-ring. Clean the groove. Apply Bettcher
®
Max-Z-Lube to new O-ring and
install into groove.
•
The lip seal for the rod should be replaced if air had been leaking from the rod, if it was
removed, or if the inner lip appears uneven or worn. Use tweezers or a small wire to pry
lip seal inward and pull it out from the inside of the base. Clean the groove between base
and bearing. Apply Bettcher
®
Max-Z-Lube all over the new seal and squeeze it into the
base from the same side it was removed. Use a blunt object to coax it into position. Be
sure that the lip is facing toward the inside of the base as shown in Figure #63.
FIGURE #63
Lip Seal
Base
Wiper
.239 (6.07mm)