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Chapter 7 Section I: Replacement Procedures
Spring, Extension
ATTENTION
Do not let the hammer bank rotate toward the platen during spring
replacement.
Removal
1. Prepare the printer for maintenance (page 152).
2. Open the printer cover.
3. Remove the shuttle cover assembly (page 203).
4. Unhook the extension spring from the spring lugs on the hammer bank
and shuttle frame. (See Figure 49, page 272.)
Installation
1. Put a dab of IBM #20 bearing lubricant on both spring lugs.
ATTENTION
Make sure the extension spring does not touch the MPU cable after
installation.
2. Hook the extension spring over the spring lugs. (See Figure 49, page
272.)
3. Install the shuttle cover assembly (page 203).
4. Return the printer to normal operation (page 153).
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