Ithaca 75 User Manual page 57

Note: You do not need to remove any items from the printer to remove the
Feed Roll Shaft, except for the Ribbon Cassette and the Printhead. Any
time the Feed Roll Shaft is replaced, the Feed Roll Bearings on either
end must also be replaced.
1. Remove the Ribbon Cassette.
2. Remove the Printhead (A) by lifting up on the Printhead Clamp (B) that is
located on the right side of the Printhead.
3. Grasp the Printhead (A) and pull straight up while pushing back on the
Forms Compensation Arm Assembly.
The Forms Compensation Arm Assembly is the assembly directly behind
the Printhead.
4. Remove the C-Clip (D) that is on the inside of the Feed Roll Bearing (E) on
the left-hand side of the Feed Roll Shaft (C).
Be careful not to lose the C-Clip. The tension is high and it will spring out
if you do not have a good hold on it.
Note: During the next four steps, you may need to push back on the Forms
Compensation Arm Assembly to get the Feed Roll Shaft out. If the
Journal Bucket Assembly has been removed, you may find it easier to
pivot the Forms Compensation Arm Assembly so that it is lying flat
and out of your way.
5. Slide the Feed Roll Shaft (C) to the left by pushing it through from the right
side with a screwdriver or other tool.
6. When the Feed Roll Shaft (C) comes out of the Right Side Frame, lift it up
enough to clear the frame.
7. Slide the Feed Roll Shaft (C) to the right until it clears the Left-Side Frame.
8. Place the new Feed Roll Bearings (E) on the Feed Roll Shaft (C).
When replacing the Feed Roll Shaft, be sure to line up the Feed Roll
Bearings correctly. The two small notches should point toward the cutaway
in the frame.
Note: Reverse these procedures to reinstall the Feed Roll Shaft.
Note: Check and readjust the Platen Air Gap. See "Adjusting the Platen Air
Gap" in the "Maintenance" chapter.
49
Disassembly