IBM 6400 Series, Maintenance Information Manual

Page: 243 / 422

Shuttle Frame Assembly
243
Installation
1. Install the hammer bank / ribbon mask cover assembly (page 200), 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 264, Figure 47).
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 20
±
2 inch-pounds (2.26
±
0.23 N•m).
6. Torque the center captive 5/32 inch socket head screw to
20
±
2 inch-pounds (2.26
±
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 49, page 272, 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 162); otherwise, skip to step 11.
11. Install the shuttle cover assembly (page 203).
12. Models -014 and -015 only: adjust the coil temperature if the original
shuttle frame assembly was replaced (page 181).
13. Models -004, -04P, -005, and -05P only: set shuttle speed if the original
shuttle frame assembly was replaced (page 182).
14. Adjust the hammer phasing (page 173).
15. Return the printer to normal operation (page 153).