Replacing the Lower Roller Assembly

1. Disconnect the compressed air supply to the machine.

2. Disconnect the air tube from the piston.

3. Remove the HP flag. Note carefully the position of the flag before removal.Unscrew the two retaining set screws

4. Remove the C clip holding the shaft to the bearing on this sideNow go to the other sid

5. Use a felt tipped marker to mark the position of the piston flange and the housing.
6. Open and remove the 3 screws [1] holding the piston flange to the housing.
   NOTE: Steps 6 and 7 are only required if you intend to replace the piston or the flange with a new one. Otherwise, the piston and flange can be kept intact.
7. Disassemble the piston in order to slide the roller assembly unit out smoothly.

8. Use pliers to extract the small securing C Clip [3] from the shaft on this side.

9. Slide the roller assembly out of the bearing and then out of the Opto - Mec

1. Slide the roller assembly into the Opto - Mech. Be careful not to catch any rollers on the sides

2. Insert the flag axle on the end of the roller assembly and into the bearing at the other end of the housing.

3. Position the piston flange against the Opto - Mech., Use the previously marked signs as a reference.

NOTE that in this picture, the piston was not separated from the flange.

4. Assemble the small securing springNOTE: This step is only needed if the piston was separated from the flange.

5. Insert three screws into the slotted holes and tighten. Do not apply Locktite to these screws.

6. Attach the H.P. flag and tighten the two screws. The H.P. flag should have the flat edge facing down. Note the position of the flag in the illustration

7. Attach the air hose to the piston. Connect the air pressure.

8. Activate the piston to verify that the roller assembly operates correctly

9. Load a plate and check for smooth operatio

10. Expose a maximum image area 80% uniform tint. Check for any imaging problems (hot spots) that may result from uneven attachment to the drum.