Instruction manual

166
Chapter 5 Section I: Replacement Procedures
Hammer Spring Assembly
Removal
1. Prepare the printer for maintenance (page 106).
2. Remove the shuttle frame assembly (page 198).
3. Carefully vacuum the shuttle frame assembly.
4. Remove the hammer bank cover assembly (page 157).
CAUTION Hammer springs and hammer tips are fragile. Do not touch the hammer
springs or tips. Handle hammer spring assemblies by the thick
mounting base only. Apply pressure only to the mounting base.
5. Remove the mounting screws from the old hammer spring assembly.
(See Figure 22, page 167.)
6. Handling the hammer spring assembly by the mounting base only, gently
push up the mounting base and pry the old spring assembly off its
mounting pins. (See Figure 22, page 167.)
7. Inspect the hammer bank and the old hammer spring assembly:
a. If there is ink on the hammer bank mounting surface, the hammer
spring assembly mounting surface, or the hammer spring neck or
tines, reinstall the old hammer spring assembly and replace the
shuttle frame assembly (page 198).
b. If the old hammer spring assembly and the hammer bank are free of
ink, install the new hammer spring assembly, as shown in the next
section.