IBM 6400 series Maintenance Manual page 247

Installation
1. Open the doors on the left and right tractors. Position the tractor belts so
the alignment marks are at the top on both tractors. (See Figure 38.)
2. Grasp the vertical adjustment knob and slide the splined shaft through
the right side plate, the tractors, and the left side plate (page 281,
Figure 48). Make sure the same spline passes the marked groove on
each tractor.
3. Install the bearing clamp and screw.
4. Apply a thin film of bearing lubricant to the bearing.
5. Slide the spring link and bearing onto the left side of the splined shaft
with the white nylon bushing flange to the outside of the printer.
6. Attach the spring to the left side plate and the spring link.
7. Install the grip ring on the splined shaft with 0.010 inches of clearance
between the grip ring and the nylon bearing.
8. Install the ground clip and screw.
9. Install the paper feed timing belt (page 195).
10. Set the paper feed timing belt tension (page 160).
11. Adjust splined shaft skew (page 174.)
12. Install the paper supports on the splined shaft and support shaft. (See
Figure 48, page 281, item 21.)
13. Return the printer to normal operation (page 159).
Replacement Procedures and Illustrated Parts List
Figure 38. Splined Shaft and Tractor Installation
Tractor
NOTE:
Align the marks
on each tractor
before inserting
Alignment Mark
splined shaft.
Splined Shaft
247