Shuttle Frame Assembly
363
Installation
1. Install the hammer bank / ribbon mask cover assembly (page 325), if it was removed.
ATTENTION
To prevent electrostatic damage to electronic components, wear a properly grounded static wrist strap when handling
circuit boards, the shuttle frame assembly, and any other electronic component.
Do not remove the grease from the shaft of the replacement shuttle frame assembly. The shuttle shaft is aluminum,
and the clamped ends of the shaft must be greased to prevent galling.
2. Holding the shuttle frame assembly by the support legs cast on both sides of the shuttle motor, set it into the base casting.
Use both hands: the shuttle frame assembly is heavy (page 406, Figure 42).
3. Align the center 5/32 inch socket head screw in the base casting and hand turn the screw until only two or three threads
have started.
4. Pull the shuttle frame assembly toward the front of the printer and hold it in this position while you do step the next step.
IMPORTANT
Do not over tighten the shuttle frame assembly hold-down screws.
5. Slide the side clamps over the guide shaft and torque the 5/32 inch socket head clamp screws to 30 ±
2 inch-pounds
(3.39 ±
0.23 N•m).
NOTE: Use the 1-30 inch-pound Torque Screwdriver, IBM part number 16F1661.
6. Torque the center captive 5/32 inch socket head screw to 30 ±
2 inch-pounds (3.39 ± 0.23 N•m).
7. Connect the hammer drive and hammer logic cable connectors to the terminator board on the shuttle frame assembly.
8. Connect the shuttle motor cable connector.
9. Route the MPU cable under the extension spring and connect the MPU cable connector. (See Figure 43, page 409, item 4.)
Make sure the MPU cable does not touch the extension spring after it is connected.
10. If the shuttle frame assembly is a new or refurbished unit, adjust the platen gap (page 374); otherwise, skip to step 11.
11. Install the shuttle cover assembly (page 326).
12. Install the ribbon. (Refer to the
User’s Manual
.)
13. Models -v15 and -v20: adjust the coil temperature if the original shuttle frame assembly was replaced (page 383).
14. Adjust the hammer phasing (page 381).
15. Return the printer to normal operation (page 314).
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