| 1. Loosen 2 Tooling Plate Socket Head Cap Screws (Part #25) to remove Tooling Plate (Part #24) 2. Loosen 4 Bushing Retainer Flat Head Cap Screws (Part #13) to remove bushing retainer (Part #12) and Loaded Bushing (Part #5). 3. Loosen 4 Head Sleeve Bolts (Part #23) and 4 Hex Head Cap Screws (Part #22) to remove Piston/Rod Assembly (Part #20 & #26). 4. Carefully remove old seals and wearband. (Part [#1, #2, #3 Seal Kit only], #8, #9, #14, #16, and #17) Any damage to the seal grooves may result in leakage. 5. Lubricate new seals with supplied Numatics' Lube. Examine seals before installing for any contamination. Contamination may cause leakage. 6. Install Piston seal (Part #17). Make sure the piston seal is not twisted inside groove. Next, install back-up rings (Part #16) if piston seal is a T-seal. See Seal Installation guide. 7. Install lubricated wearband (Part #14) onto piston. Sink piston/rod assembly into sinker tube. See Sinker Tube Part Numbers Chart. 8. Apply lube inside the cylinder tube. 9. Sink piston/rod assembly into cylinder tube. 10. Press piston/rod assembly flush with the cylinder tube. Wipe off any lube from the face of the piston. 11. Place Tube End Seals (Part #8) into head and cap seal grooves. Examine seals after installing for any contamination. Contamination may cause leakage. 12. Install Rod seal/Wiper (Part #1), Bushing O-rings (Part #2), and Head Cushion Seal (Part #3*) if available into bushing (Seal Kit only for this step). See Seal Installation Guide. Lightly grease Rod Seal/Wiper and Bushing O-rings after installation. This will ease the installation of the rod bushing over the rod and into the head. 13. Reassemble cylinder except for loaded bushing. First, loosely torque Head Sleeve Bolts and Hex Head Cap Screws (Part #22) to allow head and cap to rotate slightly. Carefully place bushing over the rods until getting interference. Slide the bushing down onto the rods and into the bushing pocket on the head. 14. Before final torque, place cylinder on level surface to square head and cap. Torque Head Sleeve Bolts and Hex Head Cap Screws in a crisscross pattern. Use torque tolerance charts for Head Sleeve Bolts and Hex Head Cap Screws. 15. Place Bushing Retainer (Part #12) over bushing. Lightly tighten Retainer Screws (Part #13). Place Tooling Plate over rods and hand tighten Tooling Plate Socket Head Cap Screws. 16. Stroke cylinder by hand. This will enable detection of any binding. If binding does occur, repeat steps 13-15. If there is no binding, torque Retainer Screws to torque tolerances for bushing retainer screws. |