Specifications

3. Remove the square shaft and pulley assembly through the right side
of the printer.
4. Turn the horizontal vernier knobs until the tractors reach full left
stop. Use a medium-size screwdriver to remove the two pan head
screws and washers from the round shaft bearing stop at the right
end of the round shaft. Remove the stop from the side frame.
5. Remove the E-ring on the round shaft at the end of the yoke by
loosening the thumb screw on the yoke location collar.
6. Disconnect cable assembly connector CA17-P9 from the paper out
switch located on the left tractor.
7. Unlock the tractors from the round shaft. Hold the lower horizontal
adjustment knob in place while unscrewing the the round shaft.
Move the left end of the rounds shaft forward and then withdraw
toward the left side of the printer to remove it from the LG31.
8. If the lower tractors are being replaced, remove them from the round
shaft. If necessary, remove the pulley and hand knob from the round
shaft.
9. To remove the pulley and hand knob from the round shaft, remove
the retaining ring and nylon spring from the left outside end of the
round shaft pulley.
10. Install the left and right lower tractors on the round shaft. Position
the two tractors so that the white dots are facing forward.
11. Install the the round shaft and tractors assembly into the LG31. Hold
the horizontal adjustment hand knob while screwing the assembly
securely.
12. Using the assembly hardware removed in step 5 of the previous
section, install the round shaft bearing stops.
13. Using the assembly hardware removed in step 4 above, install the
round shaft bearing stop.
6–44 REMOVAL AND REPLACEMENT PROCEDURES